NISTIR 8086

Interlaboratory Analytical

Comparison Study of Fatty Acid

Concentrations in Human SerumResults for Exercise 02:

QA15FASER02

Michele M. Schantz

This publication is available free of charge from:

http://dx.doi.org/10.6028/NIST.IR.8086
NISTIR 8086

Interlaboratory Analytical 

Comparison Study of Fatty 

Acid Concentrations in

Human Serum- Results for 

Exercise 02: QA15FASER02 

Michele M. Schantz 

Chemical Sciences Division 

Material Measurement Laboratory

This publication is available free of charge from:

http://dx.doi.org/10.6028/NIST.IR.8086

December 2015 

U.S. Department of Commerce 

Penny Pritzker, Secretary

National Institute of Standards and Technology 

Willie May, Under Secretary of Commerce for Standards and Technology and Director
i 

ABSTRACT

The National Institute of Standards and Technology (NIST), at the request of the National 

Institute of Health’s (NIH’s) Office of Dietary Supplements (ODS) and in conjunction with the 

Centers for Disease Control and Prevention (CDC), initiated a second interlaboratory analytical 

comparison study of fatty acid concentrations in human serum in 2015. Three unknown serum 

samples were distributed along with the three levels of candidate Standard Reference Material 

(SRM) 2378 Fatty Acids in Human Serum as control samples. This is a performance-based

program so participating laboratories were requested to use the analytical procedures that they 

typically use in their laboratories for these analyses and report data for those fatty acids that they 

typically quantify. The results from the second exercise are reported along with a summary of 

the analytical methods used by each laboratory. 
1

Background

The National Institute of Standards and Technology (NIST) currently offers three quality

assurance programs (QAPs) for the determination of micronutrients, vitamin D metabolites, and

fatty acids in serum and plasma matrices, the MMQAP, VitDQAP, and the FAQAP, respectively. 

Given the similarity in the operations of these programs, NIST has consolidated the three

programs into one larger program, the NIST Clinical Quality Assurance Program, or ClinQAP

(http://www.nist.gov/mml/csd/clinqap.cfm). The primary goals of the ClinQAP are to support

the comparability of clinical measurements through the MMQAP, VitDQAP, and the 

FAQAP and to monitor and support the emerging measurement needs of the clinical community.

The first exercise of the FAQAP was conducted in 2012 with 11 laboratories returning data for

the content of individual fatty acids in candidate Standard Reference Material (SRM) 2378 along

with SRM 1950 Metabolites in Human Plasma which was distributed as the control sample.

Candidate SRM 2378 consists of three serum materials collected from: donors who have not

taken fish or flaxseed oil supplements for one month prior to collection; donors who have taken

flaxseed oil supplements for a minimum of one month prior to collection; and donors who have

taken fish oil supplements for a minimum of one month prior to collection. SRM 1950 is

designed to represent “normal” human plasma. Plasma was obtained from 100 individuals

(equal number of men and women in a narrow age range (40 to 50 years) who had undergone an

overnight fast prior to blood draw. The results from the first exercise were published in NIST

Internal Report (NISTIR) 7953. [1]

Overview of Exercise 02: QA15FASER02

For the second FAQAP exercise, the intercomparison materials were three serum samples

designated as FAQAP unk001 (gold caps), FAQAP unk002 (purple caps), and FAQAP unk003

(pink caps). In addition, participants were requested to run each of the three levels of candidate

SRM 2378 Fatty Acids in Human Serum (Level 1 - red cap; level 2 - blue cap; and level 3 -

green cap.) as control materials. The laboratories were provided with three vials of each

unknown material, each vial contained approximately 1 mL of serum, and were requested to do

triplicate measurements of each unknown sample using their laboratory's and/or program's

analytical protocols for the concentrations of the fatty acids currently being determined in their

laboratory. In addition, they were requested to analyze one subsample of each level of candidate

SRM 2378 as the control samples. A target list of fatty acids was provided; however,

participants did not need to quantify all of these compounds and could add additional compounds

when reporting data. They were requested to report results, using three significant figures, in

units of either μg/g or μmol/L (μM) and to provide brief descriptions of their cleanup and

analytical procedures.

Reported Results
2

Laboratories were assigned numerical identification codes in order of receipt of data with the

exception of the NIST laboratory which is Lab 1 in this exercise. The fatty acids included in the

study are listed in Table 1 with the suggested list of fatty acids at the top of the table and the

additional fatty acids reported listed below. The laboratory mean values, standard deviations, and

relative standard deviations are shown in Tables 2, 4, and 6 in μg/g for unknowns 01, 02, and 03,

respectively, and in Tables 3, 5, and 7 in μM for unknowns 01, 02, and 03, respectively. The

laboratory values reported for each of the three levels of the control sample, candidate SRM

2378, are summarized in Tables 8, 10, and 12 in μg/g and in Tables 9, 11, and 13 in μM.

Summaries of the methods used and notes submitted by each laboratory are in Appendix A as

well as charts of the mean numerical results reported by each laboratory for each analyte in the

exercise materials in Appendix B.

Discussion

NIST contacted over 40 laboratories in early 2015 regarding participation in the second

interlaboratory analytical comparison study of total fatty acid concentrations in human serum.

Of the laboratories contacted, 15, including NIST, replied with interest in participating in this

study and received samples in late February and early March 2015. The deadline for receipt of

data was June 1, 2015. All but two laboratories returned data by June 9, 2015. One of the

remaining laboratories had personnel changes and instrument issues and requested an additional

extension. They reported data on July 24, 2015. In addition, one of the laboratories, who did

report data on June 1, requested a second set of samples for reanalysis since the first set of

samples had thawed prior to arrival in the laboratory. This laboratory reported results from their

reanalysis on July 29, 2015. For this laboratory, only the second set of data is included in this

report. As of July 31, the last laboratory had not returned data. An alphabetical list of

laboratories who returned data is given in Appendix C. Please note that the numerical codes in

the following tables and figures are based on the receipt of the data and therefore do not follow

the order in Appendix C.

Laboratories were requested to submit data for the fatty acids that they typically monitor in

similar samples (Table 1) for three subsamples of each unknown sample received and one

subsample of each of the three levels of candidate SRM 2378 in units of either μg/g or μM along

with the density of each sample. Summaries of the results submitted by each laboratory are

presented in Tables 2 through 7 as the means, standard deviations, and relative standard

deviations for the three values submitted for each unknown sample in both μg/g and μM. Seven

laboratories reported the data in μg/g, six laboratories reported the data in μmol/L, and one

laboratory reported data in mg/mL. The conversions between the units reported and the alternate

units were calculated using the densities provided by each laboratory except for labs 1, 7, 9, 11,

and 14. These laboratories did not report a density so the density was assumed to be 1 g/mL for

the conversion. The densities reported by the remaining laboratories ranged from 0.952 g/mL to

1.6 g/mL. Summaries of the results from one subsample of each of the three levels of candidate
3

SRM 2378 are presented in tables 8 through 13 in both sets of units along with the certified and

reference values for the fatty acids.

The tables were sent to the participating laboratories, except lab 7 and 14, on July 1 so that each

laboratory had an opportunity to review the data. Three laboratories submitted a limited number

of revised values based on the review. Those revisions are reflected in the data summarized in

this report.

As shown in Tables 2 through 7, the relative standard deviations (RSDs) for the analyses of three

subsamples for each unknown serum sample are generally < 20 %. Lab 3 had a few analytes,

particularly in unknown 02, with higher RSDs (up to 90 %). Labs 6 and 13 had higher RSDs for

a few compounds reported at low mass fractions (< 2 μg/g), and lab 14 had higher RSDs for

miscellaneous fatty acids. Several laboratories reported data for additional fatty acids. These

fatty acids are included at the bottom of Table 1 and summarized at the bottom of Tables 2

through 13.

The data in terms of μg/g are plotted by analyte in each material in Appendix B. Each data point

is the mean and associated standard deviation of the data reported by the laboratory of the

indicated analyte in the indicated sample. The medians calculated from the data received for the

fatty acid in each unknown sample are summarized in Tables 2, 4, and 6 and included for each

chart. The charts for the three levels of SRM 2378 include the certified or reference values for

comparison purposes.

Table 14 reports the percent differences from the median values by laboratory. There are trends

for individual fatty acids with data from one or more laboratories being high or low for a

particular fatty acid in all of the materials studied. Summarizing only the percent differences

>50% from the median values:

 Lab 2 reported higher values for C22:4n6 in all samples.

 Lab 3 had particular issues with unknown 02 resulting in relatively high values with large

uncertainties. They also reported high values for C18:1n7 in all of the samples.

 Lab 6 reported low values for C18:3n3, C18:3n6, C20:5n3, C22:4n6, C22:5n3, C22:5n6,

and C24:1n9 and high values for C20:1n9.

 Lab 8 reported low values for C20:0, C22:0, and C24:0.

 Lab 9 reported high values (>150% higher than the medians) for C22:5n3.

 Lab 11 reported low values for C22:1n9.

 Lab 13 tended to report either relatively high or low values with high results for the

majority of the fatty acids and low values for C20:0, C22:0, C24:0, and C24:1n9.

 Lab 14 reported the highest values for most of the fatty acids although they reported

values close to the median values for C14:1n5 and C18:2n6.

The following table summarizes the laboratory trends per fatty acid in each sample in terms of

the laboratory code reporting the lowest and highest value for each fatty acid, color coded by

laboratory:
4

Laboratory code for laboratory reporting lowest and highest values for individual fatty acids in each material

Unknown 01 Unknown 02 Unknown 03 SRM 2378-1 SRM 2378-2 SRM 2378-3

Code Lowest Highest Lowest Highest Lowest Highest Lowest Highest Lowest Highest Lowest Highest

C14:0 5 14 5 14 2 14 11 and 12 14 2 14 11 13

C14:1n5 5 3 5 3 5 13 5 13 5 3 5 4

C16:0 2 14 2 14 2 13 14 13 2 13 2 13

C16:1n7 2 14 2 14 2 and 9 14 2 14 2 14 2 14

C18:0 10 14 1 14 2 14 12 14 2 14 9 14

C18:1n7 6 14 6 14 6 14 6 14 10 14 6 14

C18:1n9 2 14 2 14 2 13 2 13 2 13 2 13

C18:2n6 2 13 2 13 2 13 2 13 2 13 2 13

C18:3n3 6 9 6 3 6 13 6 13 6 13 6 9

C18:3n6 5 13 6 3 6 13 6 13 6 13 6 13

C20:0 8 14 8 14 8 14 8 14 8 14 8 14

C20:1n9 5 14 5 14 8 14 5 14 10 14 10 14

C20:2n6 6 14 6 14 6 14 6 13 6 13 6 13

C20:3n6 2 14 2 14 2 14 2 14 2 14 2 14

C20:4n6 2 14 2 14 2 14 2 14 2 14 6 14

C20:5n3 6 14 6 14 6 14 6 14 6 14 6 14

C22:0 8 14 8 14 8 14 8 14 8 14 8 14

C22:1n9 11 14 11 14 11 14 11 14 11 14 11 14

C22:4n6 5 14 5 14 6 14 12 14 6 14 5 14

C22:5n3 6 9 6 9 6 9 6 9 6 9 6 9

C22:5n6 5 14 5 14 6 14 5 14 5 14 5 14

C22:6n3 6 14 6 14 6 14 11 14 11 14 6 14

C24:0 8 14 8 14 8 14 8 14 8 14 8 14

C24:1n9 13 14 13 14 13 14 13 14 13 14 13 14

These results could be obtained by incomplete extraction (low), coelution with other fatty acids

or matrix components on the analytical column used (high), misidentification of the

chromatographic peaks (low or high), or from some other method variations such as inaccurate

calibration.

Following the initial review of the data, lab 8 discovered an error in the concentration of one of

the surrogates which they use for recovery corrections. They, therefore, chose a different

surrogate (C22:1n9 instead of d31 C16:0) to use for the recovery corrections. The lab reported

that they had trouble getting the deuterated C16:0 into solution during the preparation of the suite

of surrogates. Their revised data are shown in Appendix D.

The methods used by each laboratory are summarized in Appendix A with the procedures in

Table A-1, the calibration information in Table A-2, and notes submitted by laboratories in Table

A-3. The hydrolysis and extraction methods were similar among some of the laboratories with

labs 2, 4, and 5 and labs 3, 10, and 11 following a similar procedures. Most laboratories used

gas chromatography (GC) with either flame ionization detection (FID) or mass spectrometry

(MS) following a derivatization. The exception being lab 7 which used a liquid chromatography

(LC)/ MS/MS method. For the GC analyses, the columns used ranged in polarity from relatively

non-polar (5% phenyl methylpolysiloxane phase) to relatively polar (cyanopropyl phase). For

the calibration information (Table A-2), labs 1, 3, 4, 6, and 7 used a linear regression, labs 8, 11,
5

12, and 14 used a quadratic regression, and lab 10 used a mix of linear and quadratic regression

tailored by analyte. Lab 9 only reported the limits of their calibration range, and labs 2, 5, and

13 did not report calibration information. Combining the method information with the trends in

the data reported does not lead to obvious explanations of the wide variations noted in the data

submitted by individual laboratories.

Intercomparison exercises provide an important mechanism for assessing the comparability,

repeatability, and trueness of data being produced by the participating laboratories. Exercise

materials similar in matrix, form, and analyte concentration to typical samples routinely analyzed

by the laboratories are most useful for demonstrating the level of comparability and for revealing

potential measurement and method problems. The data from this exercise can be used to assess

the comparability across a limited number of international laboratories (see Appendix C). The

data do not indicate specific method biases but do indicate the need for such intercomparisons

and for the use of control materials to increase the comparability of data across laboratories.

Acknowledgments

The financial support for this intercomparison exercise was provided by the National Institutes of Health

(NIH), Office of Dietary Supplements (ODS). Technical coordination was provided by Joseph M. Betz

of NIH-ODS.

The time and effort of the analysts and management of the participating laboratories are

gratefully acknowledged.

Disclaimer

Certain commercial equipment, instruments, or materials are identified in this report to specify

adequately the experimental procedure. Such identification does not imply recommendation or

endorsement by the National Institute of Standards and Technology, nor does it imply that the

materials or equipment identified are the best available for the purpose.

References

1. Schantz M.M. Powers C,D., and Schleicher, R Interlaboratory Analytical Comparison

Study of Total Fatty Acid Concentrations in Human Serum: Results for Exercise 01:

QA12FASER01, NISTIR 7953, Gaithersburg, MD (2013).
6

Table 1. Fatty Acids Included in Study

Code

C14:0

Common Name

Myristic acid

mol wt (g/mol)

228.38

C14:1n5 Myristoleic acid 226.38

C16:0 Palmitic acid 256.43

C16:1n7 Palmitoleic acid 254.43

C18:0 Stearic acid 284.48

C18:1n7 cis- Vaccenic acid 282.48

C18:1n9 Oleic acid 282.48

C18:2n6 Linoleic acid 280.48

C18:3n3 alpha- Linolenic acid 278.48

C18:3n6 gamma- Linolenic acid 278.48

C20:0 Arachidic acid 312.54

C20:1n9 11-Eicosenoic acid 310.54

C20:2n6 11,14-Eicosadienoic acid 308.53

C20:3n6 homo-gamma- Linolenic acid 306.53

C20:4n6 Arachidonic acid 304.52

C20:5n3 Eicosapentaenoic acid 302.52

C22:0 Docosanoic acid 340.59

C22:1n9 Docosenoic acid 338.59

C22:4n6 Docosatetraenoic acid 332.57

C22:5n3 Docosapentaenoic acid 330.57

C22:5n6 Docosapentaenoic acid 330.57

C22:6n3 Docosahexaenoic acid 328.57

C24:0 Lignoceric acid 368.64

C24:1n9 Nervonic acid 366.63

List any additional information such as known coelutions or results for additional fatty acids below:

C6:0 Caprolic acid 116.22

C8:0 Caprylic acid 144.26

C10:0 Decanoic acid 172.30

C10:1n1 9-Decenoic acid 170.30

C11:0 Undecanoic acid 186.32

C12:0 Lauric acid 200.34

C12:1n1 11-Dodecenoic acid 198.34

C12:1n7 cis-5-dodecenoic 198.34

C13:0 tridecanoic acid 214.38

C14:2 224.38

C15:0 Pentadecanoic acid 242.42

C16:1n7t Palmitelaidic acid 254.43

C16:1n9 254.43

C16:2 252.43

C17:0 Margaric acid 270.46

C17:1 10-Heptadecenoic acid 268.46

C18:1n7t trans- Vaccenic acid 282.48

C18:1n9t Elaidic acid 282.48

C18:1n12 Petroselinic acid 282.48

C18:1n12t Petroselaidic acid 282.48

9c,11t-C18:2n6 Rumenic acid 280.48

C18:4n3 Stearidonic acid 276.48

C19:0 Nonadecanoic acid 298.54

C20:3n3 11,14,17-Eicosatrienoic acid 306.53

C20:3n9 5,8,11-Eicosatrienoic acid (Mead acid) 306.53

C20:4n3 Arachidonic acid (Omega 3) 304.53

C21:0 Heneicosanoic acid 326.58

C22:2n6 Docosadienoic acid 336.59

C23:0 Tricosanoic acid 354.62

C26:0 Hexacosanoic acid 396.68

C26:1 394.68

PhA Phytanic acid 312.54

PrA Pristanic acid 298.50
10

Table 2. Interlaboratory data received for Unknown 01 (μg/g)

Lab 1 Lab 2 Lab 3

a

Lab 4

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 19.2 1.6 8.18% 18.7 0.6 3.19% 18.6 0.3 1.45% 18.1 0.2 1.22%

C14:1n5 0.922 0.056 6.03% NA 1.47 0.13 9.12% 0.759 0.088 11.62%

C16:0 547 18 3.25% 407 7 1.63% 631 8 1.26% 574 3 0.52%

C16:1n7 35.2 2.3 6.51% 21.2 0.3 1.57% 37.7 1.7 4.52% 37.6 0.3 0.68%

C18:0 184 11 5.75% 183 8 4.28% 252 4 1.55% 210 2 1.05%

C18:1n7 46.7 3.7 8.02% NA 72.7 5.9 8.11% 47.8 0.3 0.68%

C18:1n9 456 19 4.15% 357 17 4.74% 555 22 3.90% 484 4 0.81%

C18:2n6 825 34 4.13% 445 15 3.31% 931 66 7.05% 913 5 0.59%

C18:3n3 13.2 0.3 2.19% 7.40 0.45 6.05% 15.1 2.0 13.07% 11.1 0.1 1.23%

C18:3n6 6.11 0.59 9.63% NA 9.39 1.24 13.21% 6.26 0.12 1.96%

C20:0 4.40 0.43 9.68% NA 9.26 0.00 0.00% 4.31 0.19 4.43%

C20:1n9 5.94 0.37 6.23% 6.70 0.35 5.20% NA 4.25 0.12 2.93%

C20:2n6 NA NA NA 6.85 0.14 2.08%

C20:3n6 NA 28.7 2.4 8.22% 38.7 2.2 5.68% 34.2 0.3 0.97%

C20:4n6 201 15 7.53% 140 11 7.86% 195 20 10.48% 198 2 0.79%

C20:5n3 7.67 0.36 4.74% 19.7 2.3 11.46% 8.76 1.29 14.69% 7.23 0.18 2.54%

C22:0 9.87 0.58 5.92% NA NA NA 22.6 0.2 1.01% 10.5 0.2 1.71%

C22:1n9 1.55 0.09 5.84% NA NA NA 2.88 0.20 6.93% 1.61 0.18 10.91%

C22:4n6 NA NA NA 11.5 0.8 7.28% 6.68 0.52 7.77% 5.47 0.32 5.77%

C22:5n3 10.9 0.6 5.13% 13.5 0.7 5.38% 9.91 0.85 8.58% 9.07 0.10 1.13%

C22:5n6 NA NA 5.52 0.39 7.07% 4.60 0.15 3.25%

C22:6n3 48.2 3.1 6.50% 42.2 5.8 13.70% 45.0 5.3 11.73% 43.3 0.5 1.07%

C24:0 10.2 0.6 5.96% NA 19.2 0.1 0.49% 9.08 0.04 0.46%

C24:1n9 22.6 0.6 2.84% NA 36.6 1.1 2.96% 22.5 0.4 1.93%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 1 Lab 2 Lab 3

a

Lab 4

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0 0.690 0.141 20.46%

C10:1n1

C11:0

C12:0 13.5 1.4 10.22% 2.18 0.07 3.20%

C12:1 0.519 0.150 28.96%

C12:1n7

C13:0

C14:2

C15:0

C16:1n7t

C16:1n9

C16:2

C17:0 6.65 0.22 3.26%

C17:1

C18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3

C19:0

C20:3n3 1.21 0.08 7.04%

C20:3n9 2.44 0.08 3.09%

C20:4n3

C21:0

C22:2n6 1.30 0.12 8.96%

C23:0 3.62 0.27 7.36%

C26:0

C26:1

PhA

PrA

density (g/mL) NA 1.04 0.00 0.24% 0.979 0.003 0.28% 1.06 0.00 0.36%

aReported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
11

Table 2 (cont). Interlaboratory data received for Unknown 01 (μg/g)

Lab 5 Lab 6 Lab 7

a

Lab 8

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 10.7 0.3 2.47% 11.6 0.8 6.59% NA 13.6 0.4 3.11%

C14:1n5 0.367 0.064 17.54% NA NA 0.654 0.092 14.02%

C16:0 516 4 0.77% 495 24 4.87% NA 634 24 3.79%

C16:1n7 28.9 0.4 1.36% 21.9 0.7 3.20% NA 37.6 1.4 3.64%

C18:0 200 1 0.63% 246 8 3.06% NA 226 9 4.12%

C18:1n7 36.0 0.4 1.22% 27.2 1.6 5.93% NA 39.7 2.4 6.17%

C18:1n9 427 3 0.71% 364 23 6.19% NA 582 21 3.61%

C18:2n6 796 6 0.77% 672 46 6.86% NA 999 39 3.95%

C18:3n3 9.59 0.11 1.15% 1.38 0.07 4.76% NA 11.9 0.4 3.68%

C18:3n6 5.42 0.04 0.81% <LOQ NA 7.34 0.33 4.55%

C20:0 4.56 0.12 2.71% 8.16 0.25 3.03% NA 0.806 0.034 4.22%

C20:1n9 3.88 0.09 2.23% 6.59 0.38 5.71% NA 3.94 0.47 11.84%

C20:2n6 6.57 0.08 1.18% 3.68 0.23 6.33% NA 8.00 0.56 7.01%

C20:3n6 33.1 0.5 1.51% NA NA 38.6 1.2 3.10%

C20:4n6 175 1 0.75% 153 10 6.38% 270 13 4.81% 279 13 4.72%

C20:5n3 6.34 0.09 1.42% 1.00 0.18 18.00% 10.7 0.1 0.59% 8.18 0.31 3.80%

C22:0 12.9 0.4 3.16% 30.8 2.4 7.94% NA 0.374 0.042 11.15%

C22:1n9 1.20 0.07 6.17% <LOQ NA NA

C22:4n6 4.86 0.09 1.88% <LOQ NA 6.40 0.41 6.34%

C22:5n3 7.47 0.09 1.23% 0.542 0.003 0.57% NA 9.18 0.34 3.66%

C22:5n6 3.57 0.14 3.96% <LOQ NA 4.97 0.25 5.07%

C22:6n3 35.7 0.3 0.79% 31.1 2.0 6.59% 62.1 0.7 1.06% 50.3 2.6 5.10%

C24:0 12.1 0.4 3.38% 5.17 0.51 9.86% NA 0.348 0.070 20.08%

C24:1n9 21.1 0.6 2.67% 10.2 0.4 3.57% NA <LOD

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 5 Lab 6 Lab 7

a

Lab 8

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0

C10:1n1

C11:0

C12:0 <LOQ 1.46 0.09 6.21%

C12:1

C12:1n7

C13:0

C14:2

C15:0 1.07 0.09 8.03% 3.51 0.14 3.95%

C16:1n7t

C16:1n9

C16:2

C17:0 3.57 0.13 3.51% 6.22 0.28 4.50%

C17:1 0.799 0.160 19.97%

C18:1n7t

C18:1n9t 3.03 0.05 1.75%

C18:1n12

C18:1n12t

9c,11t-C18:2n6 3.06 0.11 3.57%

C18:4n3 0.227 0.050 21.91%

C19:0 0.450 0.036 7.90%

C20:3n3 0.491 0.089 18.18%

C20:3n9

C20:4n3 0.697 0.081 11.69%

C21:0 0.308 0.007 2.17%

C22:2n6

C23:0 0.326 0.055 16.87%

C26:0

C26:1

PhA

PrA

density (g/mL) 1.00 0.00 0.00% 0.987 0.050 5.10% NA 1.03 0.00 0.00%

aReported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
12

Table 2 (cont). Interlaboratory data received for Unknown 01 (μg/g)

Lab 9

a

Lab 10aLab 11a

Lab 12

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 NA 12.8 0.3 2.28% 11.9 0.9 7.25% 11.2 0.1 1.03%

C14:1n5 NA 0.509 0.009 1.78% 1.08 0.03 2.90% NA

C16:0 546 9 1.57% 575 10 1.74% 532 13 2.49% 543 7 1.29%

C16:1n7 31.9 5.0 15.80% 32.9 0.5 1.55% 37.1 6.1 16.35% 28.7 0.4 1.22%

C18:0 208 21 10.14% 175 3 1.64% 209 3 1.32% 192 4 2.10%

C18:1n7 NA 36.6 1.2 3.34% 63.6 5.4 8.55% Other

C18:1n9 540 2 0.39% 473 8 1.75% 484 8 1.59% 434 13 2.97%

C18:2n6 964 30 3.06% 916 16 1.75% 857 121 14.16% 848 17 2.00%

C18:3n3 21.6 0.7 3.40% 12.4 0.2 1.60% 12.6 0.8 6.65% 10.2 0.2 1.50%

C18:3n6 NA 6.50 0.07 1.06% 6.17 0.38 6.14% 5.90 0.10 1.69%

C20:0 NA 6.35 0.07 1.04% 6.86 0.61 8.90% NA

C20:1n9 NA 4.08 0.18 4.35% NA NA

C20:2n6 NA 6.96 0.29 4.14% NA NA

C20:3n6 NA 34.1 0.9 2.51% 38.1 4.7 12.37% 33.1 0.1 0.17%

C20:4n6 211 3 1.49% 212 4 1.87% 207 21 9.97% 177 4 2.29%

C20:5n3 17.4 0.6 3.44% 7.64 0.11 1.40% 9.17 0.31 3.37% 6.77 0.12 1.71%

C22:0 NA 20.5 0.3 1.38% 17.6 0.3 1.69% 13.7 0.3 2.24%

C22:1n9 NA NA 0.433 0.089 20.43% NA

C22:4n6 NA 5.89 0.21 3.49% 9.05 0.90 9.98% 5.23 0.06 1.10%

C22:5n3 44.1 2.7 6.11% 9.21 0.32 3.53% 12.5 0.3 2.25% 8.17 0.21 2.55%

C22:5n6 NA 4.34 0.15 3.41% 5.21 0.19 3.58% NA

C22:6n3 NA 49.0 1.1 2.18% 45.7 7.5 16.31% 40.8 0.3 0.85%

C24:0 NA 18.4 0.5 2.68% 18.5 0.7 3.63% 12.3 0.6 4.75%

C24:1n9 NA 41.0 1.9 4.69% 38.1 3.3 8.53% 23.4 1.0 4.08%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 9

a

Lab 10aLab 11a

Lab 12

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0 0.692 0.121 17.46%

C10:0 <LOD 0.697 0.146 20.94%

C10:1n1 0.954 0.047 4.91%

C11:0

C12:0 0.906 0.024 2.62% 1.53 0.18 11.79%

C12:1 0.856 0.056 6.52%

C12:1n7 0.751 0.064 8.54%

C13:0

C14:2 0.247 0.021 8.33%

C15:0 5.12 0.11 2.08% 3.02 0.16 5.37%

C16:1n7t

C16:1n9 7.74 1.71 22.14%

C16:2 0.863 0.084 9.69%

C17:0 6.62 0.13 1.94% 5.34 0.53 9.94%

C17:1

C18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3 0.162 0.003 2.04%

C19:0 0.644 0.099 15.34%

C20:3n3

C20:3n9 1.91 0.08 3.97% 6.09 0.11 1.80%

C20:4n3

C21:0 0.515 0.048 9.41%

C22:2n6

C23:0 7.54 0.11 1.46% 9.56 1.74 18.19%

C26:0 0.144 0.006 4.20%

C26:1 0.149 0.002 1.53%

PhA 0.163 0.011 6.66%

PrA 0.0299 0.0030 10.00%

density (g/mL) NA 0.956 0.003 0.28% NA 1.01 0.01 0.86%

aReported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
13

Table 2 (cont). Interlaboratory data received for Unknown 01 (μg/g)

Lab 13 Lab 14bSummary

Code mean stdev rsd mean stdev rsd median mean n

C14:0 16.8 0.2 1.25% 26.4 3.3 12.66% 15.2 15.8 12

C14:1n5 0.670 0.014 2.05% 0.722 0.315 43.56% 0.722 0.795 9

C16:0 804 3 0.32% 966 66 6.83% 547 598 13

C16:1n7 46.8 0.4 0.77% 92.0 13.1 14.28% 35.2 37.7 13

C18:0 301 1 0.22% 582 67 11.45% 209 244 13

C18:1n7 64.9 0.5 0.76% 1194 108 9.00% 47.2 162.9 10

C18:1n9 726 5 0.71% 812 88 10.82% 484 515 13

C18:2n6 1403 20 1.40% 790 108 13.73% 857 874 13

C18:3n3 19.7 0.6 3.16% 30.2c

4.2 13.86% 12.2 12.2 12

C18:3n6 10.0 0.1 0.74% NA 6.26 7.01 9

C20:0 2.17 0.85 39.18% 15.0 2.2 14.48% 5.45 6.18 10

C20:1n9 7.16 0.15 2.14% 12.9 0.6 4.40% 5.94 6.16 9

C20:2n6 16.1 0.0 0.15% 19.4 2.5 13.05% 6.96 9.66 7

C20:3n6 57.3 0.4 0.65% 132 7 5.12% 36.2 46.8 10

C20:4n6 318 2 0.73% 653 121 18.53% 204 242 14

C20:5n3 12.0 0.1 0.99% 109 87 80.28% 8.47 16.53 14

C22:0 3.39 2.75 81.12% 86.9 16.7 19.20% 13.7 20.8 11

C22:1n9 1.44 0.30 20.70% 30.0 6.2 20.61% 1.55 5.59 7

C22:4n6 9.22 0.20 2.22% 43.0 7.1 16.61% 6.54 10.74 10

C22:5n3 14.4 0.1 0.90% 28.9 6.7 23.38% 9.91 13.67 13

C22:5n6 6.64 0.11 1.69% 85.1 34.3 40.28% 5.09 14.99 8

C22:6n3 69.4 0.6 0.82% 287 57 19.88% 45.7 65.4 13

C24:0 2.59 1.24 47.81% 126 22 17.43% 12.1 21.3 11

C24:1n9 2.12 0.09 4.16% 184 34 18.55% 23.0 40.1 10

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 13 Lab 14bSummary

Code mean stdev rsd mean stdev rsd median mean n

C6:0 0.067 0.005 7.46% 0.067 0.067 1

C8:0 0.124 0.012 9.68% 0.408 0.408 2

C10:0 0.219 0.021 9.59% 0.690 0.535 3

C10:1n1 0.954 0.954 1

C11:0 0.0038 0.0006 15.79% 0.0038 0.0038 1

C12:0 1.02 0.10 9.80% 1.50 3.43 6

C12:1 0.687 0.687 2

C12:1n7 0.751 0.751 1

C13:0 0.0284 0.0033 11.62% 0.028 0.028 1

C14:2 0.247 0.247 1

C15:0 4.83 0.59 12.22% 3.51 3.51 5

C16:1n7t 127 7 5.51% 127 127 1

C16:1n9 7.74 7.74 1

C16:2 0.863 0.863 1

C17:0 1.11 0.06 5.41% 5.78 4.92 6

C17:1 0.799 0.799 1

C18:1n7t 1028 26 2.53% 1028 1028 1

C18:1n9t 1162 60 5.16% 583 583 2

C18:1n12 930 56 6.02% 930 930 1

C18:1n12t 1256 28 2.23% 1256 1256 1

9c,11t-C18:2n6 3.06 3.06 1

C18:4n3 0.194 0.194 2

C19:0 0.547 0.547 2

C20:3n3 0.848 0.848 2

C20:3n9 2.44 3.48 3

C20:4n3 0.697 0.697 1

C21:0 3.18 0.19 5.97% 0.515 1.334 3

C22:2n6 1.30 1.30 1

C23:0 5.58 5.26 4

C26:0 0.144 0.144 1

C26:1 0.149 0.149 1

PhA 0.163 0.163 1

PrA 0.030 0.030 1

density (g/mL) 1.04 0.01 0.80% NA 1.01 1.01 9

aReported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
14

Table 3. Interlaboratory data received for Unknown 01 (μM)

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 84.2 6.9 8.18% 85.2 2.7 3.19% 79.7 1.2 1.45% 83.6 1.0 1.22%

C14:1n5 4.07 0.25 6.03% NA 6.33 0.58 9.12% 3.54 0.41 11.62%

C16:0 2134 69 3.25% 1652 27 1.63% 2408 30 1.26% 2362 12 0.52%

C16:1n7 138 9 6.51% 86.9 1.4 1.57% 145 7 4.52% 156 1 0.68%

C18:0 647 37 5.75% 670 29 4.28% 868 13 1.55% 780 8 1.05%

C18:1n7 165 13 8.02% NA 252 20 8.11% 179 1 0.68%

C18:1n9 1615 67 4.15% 1315 62 4.74% 1922 75 3.90% 1810 15 0.81%

C18:2n6 2940 121 4.13% 1650 55 3.31% 3249 229 7.05% 3437 20 0.59%

C18:3n3 47.5 1.0 2.19% 27.7 1.7 6.05% 53.0 6.9 13.07% 42.0 0.5 1.23%

C18:3n6 21.9 2.1 9.63% NA 33.0 4.4 13.21% 23.7 0.5 1.96%

C20:0 14.1 1.4 9.68% NA 29.0 0.0 0.00% 14.6 0.6 4.43%

C20:1n9 19.1 1.2 6.23% 22.4 1.2 5.20% NA 14.5 0.4 2.93%

C20:2n6 NA NA NA 23.4 0.5 2.08%

C20:3n6 NA 97.5 8.0 8.22% 124 7 5.68% 118 1 0.97%

C20:4n6 660 50 7.53% 478 38 7.86% 626 66 10.48% 687 5 0.79%

C20:5n3 25.4 1.2 4.74% 67.9 7.8 11.46% 28.3 4.2 14.69% 25.2 0.6 2.54%

C22:0 29.0 1.7 5.92% NA 64.8 0.7 1.01% 32.6 0.6 1.71%

C22:1n9 4.59 0.27 5.84% NA 8.33 0.58 6.93% 5.01 0.55 10.91%

C22:4n6 NA 36.1 2.6 7.28% 19.7 1.5 7.77% 17.4 1.0 5.77%

C22:5n3 32.9 1.7 5.13% 42.5 2.3 5.38% 29.3 2.5 8.58% 29.0 0.3 1.13%

C22:5n6 NA NA 16.3 1.2 7.07% 14.7 0.5 3.25%

C22:6n3 147 10 6.50% 134 18 13.70% 134 16 11.73% 139 1 1.07%

C24:0 27.6 1.6 5.96% NA 50.9 0.3 0.49% 26.0 0.1 0.46%

C24:1n9 61.6 1.8 2.84% NA 97.7 2.9 2.96% 64.7 1.2 1.93%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0 4.23 0.87 20.46%

C10:1n1

C11:0

C12:0 69.9 7.1 10.22% 11.5 0.4 3.20%

C12:1 2.76 0.80 28.96%

C12:1n7

C13:0

C14:2

C15:0

C16:1n7t

C16:1n9

C16:2

C17:0 26.0 0.8 3.26%

C17:1

C18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3

C19:0

C20:3n3 4.15 0.29 7.04%

C20:3n9 8.39 0.26 3.09%

C20:4n3

C21:0

C22:2n6 4.09 0.37 8.96%

C23:0 10.8 0.8 7.36%

C26:0

C26:1

PhA

PrA

density (g/mL) NA 1.04 0.00 0.24% 0.979 0.003 0.28% 1.06 0.00 0.36%

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
15

Table 3 (cont). Interlaboratory data received for Unknown 01 (μM)

Lab 5

a

Lab 6

a

Lab 7 Lab 8

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 46.9 1.2 2.47% 50.2 3.3 6.59% NA 61.2 1.9 3.11%

C14:1n5 1.62 0.28 17.54% NA NA 2.96 0.42 14.02%

C16:0 2012 15 0.77% 1905 93 4.87% NA 2533 96 3.79%

C16:1n7 114 2 1.36% 84.9 2.7 3.20% NA 151 6 3.64%

C18:0 701 4 0.63% 854 26 3.06% NA 813 34 4.12%

C18:1n7 127 2 1.22% 94.9 5.6 5.93% NA 144 9 6.17%

C18:1n9 1513 11 0.71% 1272 79 6.19% NA 2113 76 3.61%

C18:2n6 2836 22 0.77% 2365 162 6.86% NA 3650 144 3.95%

C18:3n3 34.4 0.4 1.15% 4.89 0.23 4.76% NA 43.7 1.6 3.68%

C18:3n6 19.5 0.2 0.81% <LOQ NA 27.0 1.2 4.55%

C20:0 14.6 0.4 2.71% 25.7 0.8 3.03% NA 2.64 0.11 4.22%

C20:1n9 12.5 0.3 2.23% 21.0 1.2 5.71% NA 13.0 1.5 11.84%

C20:2n6 21.3 0.3 1.18% 11.8 0.7 6.33% NA 26.6 1.9 7.01%

C20:3n6 108 2 1.51% <LOQ NA 129 4 3.10%

C20:4n6 575 4 0.75% 495 32 6.38% 887 43 4.81% 940 44 4.72%

C20:5n3 21.0 0.3 1.42% 3.26 0.59 18.00% 35.2 0.2 0.59% 27.7 1.1 3.80%

C22:0 37.9 1.2 3.16% 89.2 7.1 7.94% NA 1.13 0.13 11.15%

C22:1n9 3.54 0.22 6.17% <LOQ NA NA

C22:4n6 14.6 0.3 1.88% <LOQ NA 19.7 1.3 6.34%

C22:5n3 22.6 0.3 1.23% 1.62 0.01 0.57% NA 28.5 1.0 3.66%

C22:5n6 10.8 0.4 3.96% <LOQ NA 15.4 0.8 5.07%

C22:6n3 109 1 0.79% 93.4 6.2 6.59% 189 2 1.06% 157 8 5.10%

C24:0 32.9 1.1 3.38% 13.8 1.4 9.86% NA 0.968 0.194 20.08%

C24:1n9 57.6 1.5 2.67% 27.4 1.0 3.57% NA <LOD

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 5

a

Lab 6

a

Lab 7 Lab 8

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0

C10:1n1

C11:0

C12:0 <LOQ 7.45 0.46 6.21%

C12:1

C12:1n7

C13:0

C14:2

C15:0 4.37 0.35 8.03% 14.8 0.6 3.95%

C16:1n7t

C16:1n9

C16:2

C17:0 13.0 0.5 3.51% 23.6 1.1 4.50%

C17:1 2.94 0.59 19.97%

C18:1n7t

C18:1n9t 10.6 0.2 1.75%

C18:1n12

C18:1n12t

9c,11t-C18:2n6 11.2 0.4 3.57%

C18:4n3 0.840 0.184 21.91%

C19:0 1.55 0.12 7.90%

C20:3n3 1.64 0.30 18.18%

C20:3n9

C20:4n3 2.35 0.27 11.69%

C21:0 0.968 0.021 2.17%

C22:2n6

C23:0 0.907 0.153 16.87%

C26:0

C26:1

PhA

PrA

density (g/mL) 1.00 0.00 0.00% 0.987 0.050 5.10% NA 1.03 0.00 0.00%

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
16

Table 3 (cont). Interlaboratory data received for Unknown 01 (μM)

Lab 9 Lab 10 Lab 11 Lab 12a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 NA 53.7 1.2 2.28% 52.0 3.8 7.25% 49.1 0.5 1.03%

C14:1n5 NA 2.15 0.04 1.78% 4.79 0.14 2.90% NA

C16:0 2130 33 1.57% 2145 37 1.74% 2076 52 2.49% 2128 27 1.29%

C16:1n7 125 20 15.80% 124 2 1.55% 146 24 16.35% 113 1 1.22%

C18:0 729 74 10.14% 587 10 1.64% 735 10 1.32% 679 14 2.10%

C18:1n7 NA 124 4 3.34% 225 19 8.55% Other

C18:1n9 1911 7 0.39% 1602 28 1.75% 1715 27 1.59% 1543 46 2.97%

C18:2n6 3438 105 3.06% 3122 55 1.75% 3057 433 14.16% 3037 61 2.00%

C18:3n3 77.5 2.6 3.40% 42.7 0.7 1.60% 45.1 3.0 6.65% 36.7 0.6 1.50%

C18:3n6 NA 22.3 0.2 1.06% 22.1 1.4 6.14% 21.3 0.4 1.69%

C20:0 NA 19.4 0.2 1.04% 21.9 2.0 8.90% NA

C20:1n9 NA 12.6 0.5 4.35% NA NA

C20:2n6 NA 21.6 0.9 4.14% NA NA

C20:3n6 NA 106 3 2.51% 124 15 12.37% 108 0 0.17%

C20:4n6 694 10 1.49% 665 12 1.87% 680 68 9.97% 583 13 2.29%

C20:5n3 57.4 2.0 3.44% 24.1 0.3 1.40% 30.3 1.0 3.37% 22.5 0.4 1.71%

C22:0 NA 57.6 0.8 1.38% 51.8 0.9 1.69% 40.3 0.9 2.24%

C22:1n9 NA NA 1.28 0.26 20.43% NA

C22:4n6 NA 16.9 0.6 3.49% 27.2 2.7 9.98% 15.8 0.2 1.10%

C22:5n3 134 8 6.11% 26.6 0.9 3.53% 37.7 0.8 2.25% 24.8 0.6 2.55%

C22:5n6 NA 12.5 0.4 3.41% 15.8 0.6 3.58% NA

C22:6n3 NA 142 3 2.18% 139 23 16.31% 125 1 0.85%

C24:0 NA 47.8 1.3 2.68% 50.1 1.8 3.63% 33.6 1.6 4.75%

C24:1n9 NA 107 5 4.69% 104 9 8.53% 64.1 2.6 4.08%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 9 Lab 10 Lab 11 Lab 12a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0 4.80 0.84 17.46%

C10:0 <LOD 4.04 0.85 20.94%

C10:1n1 5.60 0.27 4.91%

C11:0

C12:0 4.33 0.11 2.62% 7.66 0.90 11.79%

C12:1 4.32 0.28 6.52%

C12:1n7 3.79 0.32 8.54%

C13:0

C14:2 1.10 0.09 8.33%

C15:0 13.3 0.3 2.08% 12.5 0.7 5.37%

C16:1n7t

C16:1n9 30.4 6.7 22.14%

C16:2 3.42 0.33 9.69%

C17:0 23.4 0.5 1.94% 19.7 2.0 9.94%

C17:1

C18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3 0.559 0.011 2.04%

C19:0 2.16 0.33 15.34%

C20:3n3

C20:3n9 5.95 0.24 3.97% 19.9 0.4 1.80%

C20:4n3

C21:0 1.58 0.15 9.41%

C22:2n6

C23:0 20.3 0.3 1.46% 26.9 4.9 18.19%

C26:0 0.363 0.015 4.20%

C26:1 0.377 0.006 1.53%

PhA 0.520 0.035 6.66%

PrA 0.100 0.010 10.00%

density (g/mL) NA 0.956 0.003 0.28% NA 1.01 0.01 0.86%

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
17

Table 3 (cont). Interlaboratory data received for Unknown 01 (μM)

Lab 13aLab 14b

Summary

Code mean stdev rsd mean stdev rsd median mean n

C14:0 76.5 1.0 1.25% 116 15 12.66% 68.9 69.8 12

C14:1n5 3.09 0.06 2.05% 3.19 1.39 43.56% 3.19 3.53 9

C16:0 3268 10 0.32% 3766 257 6.83% 2134 2348 13

C16:1n7 192 1 0.77% 362 52 14.28% 138 149 13

C18:0 1103 2 0.22% 2047 234 11.45% 735 863 13

C18:1n7 239 2 0.76% 4227 381 9.00% 172 578 10

C18:1n9 2679 19 0.71% 2874 311 10.82% 1715 1837 13

C18:2n6 5214 73 1.40% 2816 387 13.73% 3057 3139 13

C18:3n3 73.9 2.3 3.16% 109c15 13.86% 43.2 44.1 12

C18:3n6 37.6 0.3 0.74% NA 22.3 25.4 9

C20:0 7.24 2.84 39.18% 47.9 6.9 14.48% 17.0 19.7 10

C20:1n9 24.1 0.5 2.14% 41.4 1.8 4.40% 19.1 20.1 9

C20:2n6 54.4 0.1 0.15% 63.0 8.2 13.05% 23.4 31.7 7

C20:3n6 195 1 0.65% 431 22 5.12% 121 154 10

C20:4n6 1091 8 0.73% 2145 397 18.53% 672 800 14

C20:5n3 41.2 0.4 0.99% 360 289 80.28% 28.0 55.0 14

C22:0 10.4 8.4 81.12% 255 49 19.20% 40.3 60.9 11

C22:1n9 4.44 0.92 20.70% 88.6 18.3 20.61% 4.59 16.5 7

C22:4n6 28.9 0.6 2.22% 129 21 16.61% 19.7 32.6 10

C22:5n3 45.4 0.4 0.90% 87.3 20.4 23.38% 29.3 41.7 13

C22:5n6 21.0 0.4 1.69% 257 104 40.28% 15.6 45.5 8

C22:6n3 220 2 0.82% 875 174 19.88% 139 200 13

C24:0 7.33 3.50 47.81% 342 60 17.43% 32.9 57.5 11

C24:1n9 6.03 0.25 4.16% 501 93 18.55% 64.4 109 10

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 13aLab 14b

Summary

Code mean stdev rsd mean stdev rsd median mean n

C6:0 0.576 0.043 7.46% 0.576 0.576 1

C8:0 0.860 0.083 9.68% 2.83 2.83 2

C10:0 1.27 0.12 9.59% 4.04 3.18 3

C10:1n1 5.60 5.60 1

C11:0 0.0204 0.0032 15.79% 0.0204 0.0204 1

C12:0 5.09 0.50 9.80% 7.55 17.6 6

C12:1 3.54 3.54 2

C12:1n7 3.79 3.79 1

C13:0 0.132 0.015 11.62% 0.132 0.132 1

C14:2 1.10 1.10 1

C15:0 19.9 2.4 12.22% 13.3 13.0 5

C16:1n7t 499 28 5.51% 499 499 1

C16:1n9 30.44 30.44 1

C16:2 3.42 3.42 1

C17:0 4.10 0.22 5.41% 21.6 18.3 6

C17:1 2.94 2.94 1

C18:1n7t 3639 92 2.53% 3639 3639 1

C18:1n9t 4114 212 5.16% 2062 2062 2

C18:1n12 3292 198 6.02% 3292 3292 1

C18:1n12t 4446 99 2.23% 4446 4446 1

9c,11t-C18:2n6 11.20 11.20 1

C18:4n3 0.70 0.70 2

C19:0 1.85 1.85 2

C20:3n3 2.90 2.90 2

C20:3n9 8.39 11.40 3

C20:4n3 2.35 2.35 1

C21:0 9.74 0.58 5.97% 1.58 4.09 3

C22:2n6 4.09 4.09 1

C23:0 15.55 14.74 4

C26:0 0.36 0.36 1

C26:1 0.38 0.38 1

PhA 0.52 0.52 1

PrA 0.10 0.10 1

density (g/mL) 1.04 0.01 0.80% NA 1.01 1.01 9

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
18

Table 4. Interlaboratory data received for Unknown 02 (μg/g)

Lab 1 Lab 2 Lab 3

a

Lab 4

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 18.6 1.1 6.04% 20.0 0.8 3.79% 24.0 0.1 0.56% 22.2 0.1 0.55%

C14:1n5 1.11 0.03 2.74% NA 2.62 0.94 35.66% 1.49 0.03 2.27%

C16:0 474 33 6.85% 381 15 3.81% 608 12 2.04% 538 4 0.68%

C16:1n7 36.4 0.8 2.26% 25.1 0.7 2.71% 60.4 19.9 32.87% 49.4 0.3 0.60%

C18:0 158 11 6.69% 166 3 1.76% 233 6 2.50% 190 2 0.82%

C18:1n7 36.3 2.0 5.42% NA 89.8 53.7 59.85% 42.2 0.1 0.26%

C18:1n9 338 14 4.14% 290 7 2.40% 778 475 61.07% 441 3 0.74%

C18:2n6 736 64 8.70% 408 5 1.18% 1255 799 63.67% 801 6 0.78%

C18:3n3 14.5 0.8 5.22% 8.91 0.18 2.05% 31.9 25.4 79.65% 15.2 0.4 2.82%

C18:3n6 8.14 0.39 4.81% NA NA NA 27.4 22.9 83.31% 10.2 0.1 1.05%

C20:0 3.23 0.14 4.34% NA NA NA 8.10 0.18 2.28% 3.97 0.05 1.38%

C20:1n9 3.71 0.25 6.80% 5.59 0.06 1.05% NA 3.19 0.10 3.24%

C20:2n6 NA NA NA 6.11 0.12 2.05%

C20:3n6 NA 33.3 0.6 1.72% 77.6 63.5 81.82% 38.9 0.1 0.16%

C20:4n6 129 8 6.20% 105 2 1.77% 251 211 83.82% 139 1 0.38%

C20:5n3 33.0 2.5 7.67% 35.7 3.9 10.77% 72.5 62.6 86.36% 34.8 0.1 0.36%

C22:0 8.38 0.58 6.92% NA NA NA 16.4 0.3 2.13% 7.77 0.38 4.89%

C22:1n9 1.05 0.05 4.46% NA NA NA 3.70 1.60 43.30% 1.45 0.16 10.93%

C22:4n6 NA NA NA 10.0 0.2 2.40% 10.0 8.5 84.70% 4.30 0.31 7.14%

C22:5n3 20.3 1.3 6.63% 20.7 0.6 2.91% 36.6 31.2 85.29% 18.4 0.2 1.08%

C22:5n6 NA NA 6.76 6.15 90.97% 2.97 0.15 5.17%

C22:6n3 64.1 2.2 3.41% 58.2 2.0 3.41% 115 99 85.60% 60.5 0.2 0.35%

C24:0 6.01 0.21 3.50% NA NA NA 14.6 0.3 2.06% 6.10 0.47 7.75%

C24:1n9 17.3 0.7 4.30% NA NA NA 36.6 14.7 40.25% 18.7 1.1 5.65%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 1 Lab 2 Lab 3

a

Lab 4

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0 0.453 0.072 15.93%

C10:1n1

C11:0

C12:0 12.0 0.2 2.01% 2.51 0.17 6.60%

C12:1 0.318 0.047 14.84%

C12:1n7

C13:0

C14:2

C15:0

C16:1n7t

C16:1n9

C16:2

C17:0 6.65 0.12 1.73%

C17:1

18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3

C19:0

C20:3n3 1.60 0.42 26.33%

C20:3n9 2.61 0.14 5.53%

C20:4n3

C21:0

C22:2n6 1.13 0.25 22.26%

C23:0 3.67 0.48 13.09%

C26:0

C26:1

PhA

PrA

density (g/mL) NA 1.04 0.00 0.11% 0.977 0.003 0.28% 1.05 0.01 0.62%

a Reported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
19

Table 4 (cont). Interlaboratory data received for Unknown 02 (μg/g)

Lab 5 Lab 6 Lab 7

a

Lab 8

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 14.8 0.2 1.66% 16.4 1.1 6.52% NA 19.8 0.6 2.99%

C14:1n5 0.859 0.057 6.69% NA NA 1.50 0.05 3.54%

C16:0 493 5 1.04% 499 8 1.59% NA 624 8 1.23%

C16:1n7 41.3 0.6 1.38% 2.61 0.20 7.65% NA 56.3 1.9 3.37%

C18:0 183 2 1.01% 245 13 5.11% NA 216 5 2.35%

C18:1n7 33.0 0.5 1.37% 25.5 1.6 6.09% NA 37.3 0.6 1.54%

C18:1n9 395 4 0.95% 360 7 1.88% NA 559 8 1.51%

C18:2n6 711 7 1.03% 640 5 0.74% NA 920 11 1.20%

C18:3n3 13.6 0.1 0.54% 1.00 0.12 11.88% NA 17.1 0.7 4.29%

C18:3n6 9.01 0.22 2.47% 0.897 0.112 12.54% NA 13.0 0.5 3.92%

C20:0 3.94 0.24 6.04% 7.42 0.24 3.19% NA 0.929 0.038 4.08%

C20:1n9 2.46 0.06 2.32% 10.7 0.1 1.13% NA 2.64 0.34 12.94%

C20:2n6 5.69 0.18 3.13% 3.43 0.06 1.87% NA 7.48 0.51 6.78%

C20:3n6 37.9 0.5 1.21% NA NA 48.8 0.9 1.77%

C20:4n6 126 1 1.11% 117 1 0.68% 218 5 2.08% 207 6 2.68%

C20:5n3 31.0 0.4 1.32% 1.39 0.03 2.09% 41.6 0.5 1.11% 44.5 1.6 3.66%

C22:0 9.35 0.36 3.90% 36.0 0.2 0.48% NA 0.373 0.037 9.81%

C22:1n9 0.97 0.12 12.90% <LOQ NA NA

C22:4n6 3.83 0.04 0.96% <LOQ NA 5.57 0.30 5.41%

C22:5n3 16.0 0.1 0.34% 8.55 0.27 3.11% NA 21.4 1.0 4.44%

C22:5n6 2.37 0.16 6.95% <LOQ NA 3.45 0.29 8.52%

C22:6n3 51.3 0.5 1.02% 49.0 0.6 1.17% 110 2 2.15% 79.8 3.4 4.23%

C24:0 9.50 0.51 5.32% 55.5 0.3 0.62% NA 0.351 0.077 21.86%

C24:1n9 15.3 0.5 3.30% 7.29 0.14 1.96% NA <LOD

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 5 Lab 6 Lab 7

a

Lab 8

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0

C10:1n1

C11:0

C12:0 0.298 0.184 61.77% 1.78 0.07 4.21%

C12:1

C12:1n7

C13:0

C14:2

C15:0 1.28 0.06 4.56% 4.09 0.23 5.69%

C16:1n7t

C16:1n9

C16:2

C17:0 3.72 0.04 1.07% 6.99 0.35 5.08%

C17:1 2.14 0.21 9.93%

18:1n7t

C18:1n9t 2.75 0.08 3.04%

C18:1n12

C18:1n12t

9c,11t-C18:2n6 4.10 0.20 4.81%

C18:4n3 0.786 0.058 7.38%

C19:0 0.488 0.007 1.50%

C20:3n3 0.692 0.059 8.53%

C20:3n9

C20:4n3 2.38 0.16 6.75%

C21:0 1.55 0.07 4.63%

C22:2n6

C23:0 1.50 0.13 8.87%

C26:0

C26:1

PhA

PrA

density (g/mL) 1.00 0.00 0.00% 0.993 0.061 6.15% NA 1.03 0.00 0.00%

a Reported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
20

Table 4 (cont). Interlaboratory data received for Unknown 02 (μg/g)

Lab 9

a

Lab 10aLab 11a

Lab 12

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 NA 17.8 0.2 1.22% 16.5 2.4 14.69% 15.6 0.2 0.98%

C14:1n5 NA 1.19 0.01 1.15% 1.61 0.19 11.88% NA

C16:0 548 10 1.81% 545 10 1.81% 512 50 9.72% 501 10 2.01%

C16:1n7 27.0 0.1 0.51% 46.3 0.7 1.50% 47.9 4.1 8.61% 40.6 0.7 1.72%

C18:0 182 5 2.78% 160 3 2.05% 190 18 9.55% 176 5 2.60%

C18:1n7 NA 31.9 0.3 1.00% 49.7 5.9 11.93% Other

C18:1n9 505 28 5.55% 434 8 1.93% 447 19 4.19% 408 11 2.73%

C18:2n6 829 51 6.19% 810 17 2.11% 817 134 16.35% 742 28 3.74%

C18:3n3 21.8 0.7 3.22% 16.9 0.3 1.78% 16.9 1.7 9.84% 14.3 0.4 2.65%

C18:3n6 NA 10.6 0.2 1.59% 11.3 1.1 9.57% 9.67 0.25 2.60%

C20:0 NA 5.26 0.15 2.82% 5.96 0.98 16.43% NA

C20:1n9 NA 2.70 0.03 1.21% NA NA

C20:2n6 NA 5.65 0.05 0.97% NA NA

C20:3n6 NA 38.8 0.7 1.82% 42.1 4.3 10.26% 38.0 0.5 1.37%

C20:4n6 155 9 5.86% 151 2 1.34% 149 13 8.45% 132 7 5.49%

C20:5n3 33.5 1.4 4.07% 37.8 1.0 2.54% 41.6 3.9 9.35% 34.2 0.8 2.19%

C22:0 NA 14.5 0.4 2.45% 13.0 1.8 13.98% 10.1 0.2 2.28%

C22:1n9 NA NA 0.400 0.059 14.85% NA

C22:4n6 NA 4.80 0.05 1.00% 6.97 0.63 9.09% 4.70 0.44 9.27%

C22:5n3 55.5 1.3 2.40% 20.2 0.3 1.27% 24.6 2.3 9.41% 18.5 0.4 1.90%

C22:5n6 NA 2.84 0.07 2.45% 3.29 0.27 8.31% NA

C22:6n3 NA 70.8 1.8 2.59% 57.1 9.4 16.43% 60.2 0.9 1.49%

C24:0 NA 13.7 0.4 2.64% 14.3 1.7 12.13% 9.87 0.25 2.55%

C24:1n9 NA 26.0 0.2 0.75% 29.3 3.3 11.19% 16.5 0.9 5.72%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 9

a

Lab 10aLab 11a

Lab 12

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0 0.660 0.072 10.91%

C10:0 0.276 0.013 4.58% 0.823 0.232 28.18%

C10:1n1 0.865 0.109 12.66%

C11:0

C12:0 1.10 0.03 3.13% 1.91 0.45 23.64%

C12:1 0.745 0.110 14.78%

C12:1n7 0.643 0.090 14.07%

C13:0

C14:2 0.173 0.004 2.25%

C15:0 3.6 0.1 1.67% 3.31 0.46 13.85%

C16:1n7t

C16:1n9 7.13 0.69 9.70%

C16:2 0.761 0.095 12.47%

C17:0 6.78 0.07 1.02% 6.05 1.13 18.75%

C17:1

18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3 0.486 0.078 16.08%

C19:0 0.720 0.144 20.05%

C20:3n3

C20:3n9 1.74 0.03 1.74% 5.30 0.58 11.03%

C20:4n3

C21:0 0.428 0.037 8.67%

C22:2n6

C23:0 7.10 0.21 2.93% 9.20 0.97 10.59%

C26:0 0.151 0.021 13.93%

C26:1 0.430 0.071 16.54%

PhA 0.319 0.050 15.56%

PrA 0.096 0.010 10.83%

density (g/mL) NA 0.966 0.003 0.27% NA 1.00 0.00 0.29%

a Reported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
21

Table 4 (cont). Interlaboratory data received for Unknown 02 (μg/g)

Lab 13 Lab 14bSummary

Code mean stdev rsd mean stdev rsd median mean n

C14:0 24.7 0.8 3.32% 56.7 35.4 62.43% 19.2 22.3 12

C14:1n5 1.76 0.08 4.58% 2.17 1.57 72.33% 1.50 1.59 9

C16:0 790 17 2.13% 1028 215 20.95% 538 580 13

C16:1n7 68.9 2.6 3.75% 123 7 5.38% 46.3 48.1 13

C18:0 270 1 0.39% 624 177 28.42% 190 230 13

C18:1n7 59.6 1.3 2.18% 1187 266 22.43% 39.7 159 10

C18:1n9 677 15 2.28% 799 230 28.79% 441 495 13

C18:2n6 1314 43 3.28% 754 262 34.72% 801 826 13

C18:3n3 28.0 0.6 2.16% 40.4c5.0 12.40% 16.1 16.7 12

C18:3n6 17.8 0.5 2.96% NA 10.4 11.8 10

C20:0 1.75 0.37 21.26% 13.7 1.1 7.68% 4.61 5.43 10

C20:1n9 4.81 0.15 3.09% 15.1 2.1 13.87% 3.71 5.65 9

C20:2n6 14.7 0.1 0.81% 19.6 2.4 12.50% 6.11 8.94 7

C20:3n6 67.9 0.8 1.24% 157 39 25.00% 40.5 58.1 10

C20:4n6 240 4 1.78% 574 191 33.24% 150 192 14

C20:5n3 61.9 1.2 1.88% 181 44 24.36% 36.8 48.9 14

C22:0 1.64 0.18 11.17% 69.5 5.6 8.08% 10.1 17.0 11

C22:1n9 0.686 0.160 23.30% 32.3 18.0 55.69% 1.05 5.79 7

C22:4n6 7.72 0.08 0.97% 39.5 7.3 18.41% 6.27 9.74 10

C22:5n3 31.4 0.3 0.96% 27.9 13.9 49.88% 20.7 24.6 13

C22:5n6 4.53 0.05 1.21% 115 10 8.68% 3.37 17.7 8

C22:6n3 103.3 1.3 1.29% 347 82 23.66% 64.1 94.4 13

C24:0 1.80 0.45 25.06% 102 10 9.83% 9.87 21.2 11

C24:1n9 1.88 0.10 5.21% 123 31 25.51% 18.0 29.2 10

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 13 Lab 14bSummary

Code mean stdev rsd mean stdev rsd median mean n

C6:0 0.119 0.049 41.18% 0.119 0.119 1

C8:0 0.126 0.017 13.49% 0.393 0.393 2

C10:0 0.248 0.047 18.95% 0.365 0.450 4

C10:1n1 0.865 0.865 1

C11:0 0.0039 0.0010 25.64% 0.0039 0.0039 1

C12:0 1.38 0.18 13.04% 1.78 2.99 7

C12:1 0.532 0.532 2

C12:1n7 0.643 0.643 1

C13:0 0.0319 0.0040 12.54% 0.032 0.032 1

C14:2 0.173 0.173 1

C15:0 5.12 0.50 9.77% 3.60 3.48 5

C16:1n7t 158 9 5.70% 158 158 1

C16:1n9 7.13 7.13 1

C16:2 0.761 0.761 1

C17:0 1.20 0.19 15.83% 6.35 5.23 6

C17:1 2.14 2.14 1

18:1n7t 902 5 0.55% 902 902 1

C18:1n9t 950 56 5.89% 476 476 2

C18:1n12 741 50 6.75% 741 741 1

C18:1n12t 1119 5 0.45% 1119 1119 1

9c,11t-C18:2n6 4.10 4.10 1

C18:4n3 0.636 0.636 2

C19:0 0.604 0.604 2

C20:3n3 1.14 1.14 2

C20:3n9 2.61 3.22 3

C20:4n3 2.38 2.38 1

C21:0 3.18 0.16 5.03% 1.55 1.72 3

C22:2n6 1.13 1.13 1

C23:0 5.39 5.37 4

C26:0 0.151 0.151 1

C26:1 0.430 0.430 1

PhA 0.319 0.319 1

PrA 0.096 0.096 1

density (g/mL) 1.04 0.00 0.22% NA 1.00 1.01 9

a Reported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
22

Table 5. Interlaboratory data received for Unknown 02 (μM)

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 81.4 4.9 6.04% 91.4 3.5 3.79% 103 1 0.56% 102 1 0.55%

C14:1n5 4.92 0.13 2.74% NA 11.3 4.0 35.66% 6.95 0.16 2.27%

C16:0 1850 127 6.85% 1551 59 3.81% 2316 47 2.04% 2211 15 0.68%

C16:1n7 143 3 2.26% 103 3 2.71% 232 76 32.87% 204 1 0.60%

C18:0 557 37 6.69% 611 11 1.76% 800 20 2.50% 703 6 0.82%

C18:1n7 128 7 5.42% NA 311 186 59.85% 157 0 0.26%

C18:1n9 1197 50 4.14% 1073 26 2.40% 2691 1643 61.07% 1644 12 0.74%

C18:2n6 2625 228 8.70% 1518 18 1.18% 4372 2784 63.67% 3006 23 0.78%

C18:3n3 52.0 2.7 5.22% 33.4 0.7 2.05% 112 89 79.65% 57.6 1.6 2.82%

C18:3n6 29.2 1.4 4.81% NA 96.3 80.3 83.31% 38.5 0.4 1.05%

C20:0 10.3 0.4 4.34% NA 25.3 0.6 2.28% 13.4 0.2 1.38%

C20:1n9 11.9 0.8 6.80% 18.8 0.2 1.05% NA 10.8 0.3 3.24%

C20:2n6 NA NA NA 20.8 0.4 2.05%

C20:3n6 NA 113 2 1.72% 247 202 81.82% 134 0 0.16%

C20:4n6 424 26 6.20% 359 6 1.77% 807 676 83.82% 482 2 0.38%

C20:5n3 109 8 7.67% 123 13 10.77% 234 202 86.36% 121 0 0.36%

C22:0 24.6 1.7 6.92% NA 47.1 1.0 2.13% 24.0 1.2 4.89%

C22:1n9 3.09 0.14 4.46% NA 10.7 4.6 43.30% 4.51 0.49 10.93%

C22:4n6 NA 31.5 0.8 2.40% 29.3 24.8 84.70% 13.6 1.0 7.14%

C22:5n3 61.3 4.1 6.63% 65.4 1.9 2.91% 108 92 85.29% 58.8 0.6 1.08%

C22:5n6 NA NA 20.0 18.2 90.97% 9.45 0.49 5.17%

C22:6n3 195 7 3.41% 185 6 3.41% 343 294 85.60% 194 1 0.35%

C24:0 16.3 0.6 3.50% NA 38.6 0.8 2.06% 17.4 1.4 7.75%

C24:1n9 47.3 2.0 4.30% NA 97.7 39.3 40.25% 53.7 3.0 5.65%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0 2.77 0.44 15.93%

C10:1n1

C11:0

C12:0 62.4 1.3 2.01% 13.2 0.9 6.60%

C12:1 1.69 0.25 14.84%

C12:1n7

C13:0

C14:2

C15:0

C16:1n7t

C16:1n9

C16:2

C17:0 25.9 0.4 1.74%

C17:1

18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3

C19:0

C20:3n3 5.49 1.45 26.33%

C20:3n9 8.98 0.50 5.53%

C20:4n3

C21:0

C22:2n6 3.53 0.79 22.26%

C23:0 10.9 1.4 13.09%

C26:0

C26:1

PhA

PrA

density (g/mL) NA 1.04 0.00 0.11% 0.977 0.003 0.28% 1.05 0.01 0.62%

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
23

Table 5 (cont). Interlaboratory data received for Unknown 02 (μM)

Lab 5

a

Lab 6

a

Lab 7 Lab 8

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 64.9 1.1 1.66% 71.3 4.6 6.52% NA 88.8 2.7 2.99%

C14:1n5 3.79 0.25 6.69% NA NA 6.77 0.24 3.54%

C16:0 1924 20 1.04% 1933 31 1.59% NA 2493 31 1.23%

C16:1n7 162 2 1.38% 137 5 3.50% NA 227 8 3.37%

C18:0 644 7 1.01% 855 44 5.11% NA 777 18 2.35%

C18:1n7 117 2 1.37% 89.6 5.5 6.09% NA 135 2 1.54%

C18:1n9 1399 13 0.95% 1267 24 1.88% NA 2027 31 1.51%

C18:2n6 2537 26 1.03% 2265 17 0.74% NA 3363 40 1.20%

C18:3n3 48.9 0.3 0.54% 3.55 0.42 11.88% NA 62.9 2.7 4.29%

C18:3n6 32.3 0.8 2.47% 3.20 0.40 12.54% NA 47.8 1.9 3.92%

C20:0 12.6 0.8 6.04% 23.6 0.8 3.19% NA 3.05 0.12 4.08%

C20:1n9 7.94 0.18 2.32% 34.2 0.4 1.13% NA 8.71 1.13 12.94%

C20:2n6 18.4 0.6 3.13% 11.1 0.2 1.87% NA 24.9 1.7 6.78%

C20:3n6 123 1 1.21% NA NA 163 3 1.77%

C20:4n6 414 5 1.11% 382 3 0.68% 715 15 2.08% 696 19 2.68%

C20:5n3 102 1 1.32% 74.01 0.43 0.58% 138 2 1.11% 151 6 3.66%

C22:0 27.4 1.1 3.90% 105 1 0.48% NA 1.12 0.11 9.81%

C22:1n9 2.85 0.37 12.90% <LOQ NA NA

C22:4n6 11.5 0.1 0.96% <LOQ NA 17.2 0.9 5.41%

C22:5n3 48.3 0.2 0.34% 25.7 0.8 3.11% NA 66.4 3.0 4.44%

C22:5n6 7.17 0.50 6.95% <LOQ NA 10.7 0.9 8.52%

C22:6n3 156 2 1.02% 148 2 1.17% 336 7 2.15% 249 11 4.23%

C24:0 25.8 1.4 5.32% 11 0 1.20% NA 1.0 0.2 21.86%

C24:1n9 41.6 1.4 3.30% 19.8 0.4 1.96% NA <LOD

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 5

a

Lab 6

a

Lab 7 Lab 8

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0

C10:1n1

C11:0

C12:0 1.48 0.91 61.77% 9.09 0.38 4.21%

C12:1

C12:1n7

C13:0

C14:2

C15:0 5.23 0.24 4.56% 17.3 1.0 5.69%

C16:1n7t

C16:1n9

C16:2

C17:0 13.7 0.1 1.07% 26.5 1.3 5.08%

C17:1 7.93 0.79 9.93%

18:1n7t

C18:1n9t 9.67 0.29 3.04%

C18:1n12

C18:1n12t

9c,11t-C18:2n6 15.0 0.7 4.81%

C18:4n3 2.91 0.22 7.38%

C19:0 1.68 0.03 1.50%

C20:3n3 2.31 0.20 8.53%

C20:3n9

C20:4n3 8.00 0.54 6.75%

C21:0 4.87 0.23 4.63%

C22:2n6

C23:0 4.21 0.37 8.87%

C26:0

C26:1

PhA

PrA

density (g/mL) 1.00 0.00 0.00% 0.993 0.061 6.15% NA 1.03 0.00 0.00%

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
24

Table 5 (cont). Interlaboratory data received for Unknown 02 (μM)

Lab 9 Lab 10 Lab 11 Lab 12a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 NA 75.4 0.9 1.22% 72.5 10.6 14.69% 68.7 0.7 0.98%

C14:1n5 NA 5.06 0.06 1.15% 7.12 0.85 11.88% NA

C16:0 2136 39 1.81% 2052 37 1.81% 1995 194 9.72% 1962 39 2.01%

C16:1n7 106 1 0.51% 176 3 1.50% 188 16 8.61% 160 3 1.72%

C18:0 641 18 2.78% 544 11 2.05% 669 64 9.55% 621 16 2.60%

C18:1n7 NA 109 1 1.00% 176 21 11.93% NA

C18:1n9 1789 99 5.55% 1483 29 1.93% 1582 66 4.19% 1450 40 2.73%

C18:2n6 2954 183 6.19% 2788 59 2.11% 2913 476 16.35% 2655 99 3.74%

C18:3n3 78.2 2.5 3.22% 58.7 1.0 1.78% 60.6 6.0 9.84% 51.4 1.4 2.65%

C18:3n6 NA 36.7 0.6 1.59% 40.7 3.9 9.57% 34.8 0.9 2.60%

C20:0 NA 16.2 0.5 2.82% 19.1 3.1 16.43% NA

C20:1n9 NA 8.39 0.10 1.21% NA NA

C20:2n6 NA 17.7 0.2 0.97% NA NA

C20:3n6 NA 122 2 1.82% 137 14 10.26% 124 2 1.37%

C20:4n6 508 30 5.86% 478 6 1.34% 489 41 8.45% 434 24 5.49%

C20:5n3 111 5 4.07% 121 3 2.54% 137 13 9.35% 114 2 2.19%

C22:0 NA 41.1 1.0 2.45% 38.2 5.3 13.98% 29.9 0.7 2.28%

C22:1n9 NA NA 1.18 0.18 14.85% NA

C22:4n6 NA 14.0 0.1 1.00% 21.0 1.9 9.09% 14.2 1.3 9.27%

C22:5n3 168 4 2.40% 58.9 0.7 1.27% 74.4 7.0 9.41% 56.0 1.1 1.90%

C22:5n6 NA 8.31 0.20 2.45% 10.0 0.8 8.31% NA

C22:6n3 NA 208 5 2.59% 174 29 16.43% 184 3 1.49%

C24:0 NA 35.9 0.9 2.64% 38.8 4.7 12.13% 26.9 0.7 2.55%

C24:1n9 NA 68.6 0.5 0.75% 79.8 8.9 11.19% 45.2 2.6 5.72%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 9 Lab 10 Lab 11 Lab 12a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0 4.57 0.50 10.91%

C10:0 1.55 0.07 4.58% 4.78 1.35 28.18%

C10:1n1 5.08 0.64 12.66%

C11:0

C12:0 5.28 0.17 3.13% 9.53 2.25 23.64%

C12:1 3.76 0.56 14.78%

C12:1n7 3.24 0.46 14.07%

C13:0

C14:2 0.770 0.017 2.25%

C15:0 14.4 0.2 1.67% 13.7 1.9 13.85%

C16:1n7t

C16:1n9 28.0 2.7 9.70%

C16:2 3.01 0.38 12.47%

C17:0 24.2 0.2 1.02% 22.4 4.2 18.75%

C17:1

18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3 1.70 0.27 16.08%

C19:0 2.41 0.48 20.05%

C20:3n3

C20:3n9 5.49 0.10 1.74% 17.3 1.9 11.03%

C20:4n3

C21:0 1.31 0.11 8.67%

C22:2n6

C23:0 19.3 0.6 2.93% 26.0 2.7 10.59%

C26:0 0.380 0.053 13.93%

C26:1 1.09 0.18 16.54%

PhA 1.02 0.16 15.56%

PrA 0.320 0.035 10.83%

density (g/mL) NA 0.966 0.003 0.27% NA 1.00 0.00 0.29%

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
25

Table 5 (cont). Interlaboratory data received for Unknown 02 (μM)

Lab 13aLab 14b

Summary

Code mean stdev rsd mean stdev rsd median mean n

C14:0 112 4 3.32% 248 155 62.43% 85.1 98.3 12

C14:1n5 8.07 0.37 4.58% 9.58 6.93 72.33% 6.95 7.07 9

C16:0 3199 68 2.13% 4009 840 20.95% 2052 2279 13

C16:1n7 281 11 3.75% 484 26 5.38% 176 200 13

C18:0 984 4 0.39% 2194 624 28.42% 669 815 13

C18:1n7 219 5 2.18% 4202 943 22.43% 146 564 10

C18:1n9 2489 57 2.28% 2828 814 28.79% 1582 1763 13

C18:2n6 4866 159 3.28% 2688 933 34.72% 2788 2966 13

C18:3n3 105 2 2.16% 145c18 12.40% 58.2 60.3 12

C18:3n6 66.3 2.0 2.96% NA 37.6 42.6 10

C20:0 5.82 1.24 21.26% 43.9 3.4 7.68% 14.8 17.3 10

C20:1n9 16.1 0.5 3.09% 48.5 6.7 13.87% 11.9 18.4 9

C20:2n6 49.3 0.4 0.81% 63.4 7.9 12.50% 20.8 29.4 7

C20:3n6 230 3 1.24% 514 128 25.00% 135 191 10

C20:4n6 818 15 1.78% 1884 626 33.24% 486 635 14

C20:5n3 212 4 1.88% 597 145 24.36% 122 167 14

C22:0 5.01 0.56 11.17% 204.1 16.5 8.08% 29.9 49.8 11

C22:1n9 2.10 0.49 23.30% 95.32 53.08 55.69% 3.09 17.10 7

C22:4n6 24.1 0.2 0.97% 118.9 21.9 18.41% 19.1 29.5 10

C22:5n3 98.6 0.9 0.96% 84.4 42.1 49.88% 65.4 75.0 13

C22:5n6 14.2 0.2 1.21% 347.86 30.19 8.68% 10.3 53.5 8

C22:6n3 327 4 1.29% 1057 250 23.66% 195 289 13

C24:0 5.09 1.27 25.06% 276.8 27.2 9.83% 25.8 44.9 11

C24:1n9 5.32 0.28 5.21% 336.8 85.9 25.51% 50.5 79.6 10

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 13aLab 14b

Summary

Code mean stdev rsd mean stdev rsd median mean n

C6:0 1.02 0.42 41.18% 1.02 1.02 1

C8:0 0.873 0.118 13.49% 2.72 2.72 2

C10:0 1.44 0.27 18.95% 2.16 2.63 4

C10:1n1 5.08 5.08 1

C11:0 0.0209 0.0054 25.64% 0.02 0.02 1

C12:0 6.89 0.90 13.04% 9.09 15.4 7

C12:1 2.72 2.72 2

C12:1n7 3.24 3.24 1

C13:0 0.149 0.019 12.54% 0.15 0.15 1

C14:2 0.770 0.770 1

C15:0 21.1 2.1 9.77% 14.4 14.3 5

C16:1n7t 621 35 5.70% 621.00 621.00 1

C16:1n9 28.0 28.0 1

C16:2 3.01 3.01 1

C17:0 4.44 0.70 15.83% 23.3 19.5 6

C17:1 7.93 7.93 1

18:1n7t 3193 18 0.55% 3193.15 3193.15 1

C18:1n9t 3363 198 5.89% 1686.37 1686.37 2

C18:1n12 2623 177 6.75% 2623.19 2623.19 1

C18:1n12t 3961 18 0.45% 3961.34 3961.34 1

9c,11t-C18:2n6 15.0 15.0 1

C18:4n3 2.31 2.31 2

C19:0 2.05 2.05 2

C20:3n3 3.90 3.90 2

C20:3n9 8.98 10.6 3

C20:4n3 8.00 8.00 1

C21:0 9.74 0.49 5.03% 4.87 5.30 3

C22:2n6 3.53 3.53 1

C23:0 15.1 15.1 4

C26:0 0.380 0.380 1

C26:1 1.09 1.09 1

PhA 1.02 1.02 1

PrA 0.320 0.320 1

density (g/mL) 1.04 0.00 0.22% NA 1.00 1.01 9

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
26

Table 6. Interlaboratory data received for Unknown 03 (μg/g)

Lab 1 Lab 2 Lab 3

a

Lab 4

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 55.1 3.7 6.68% 38.0 1.1 2.85% 53.9 0.8 1.56% 55.9 0.9 1.56%

C14:1n5 3.29 0.33 9.90% NA 4.78 0.13 2.79% 3.59 0.12 3.32%

C16:0 1041 45 4.36% 610 18 2.89% 945 14 1.52% 921 2 0.22%

C16:1n7 52.1 2.8 5.38% 27.1 0.9 3.29% 52.6 1.6 2.98% 53.1 0.2 0.36%

C18:0 337 11 3.26% 259 4 1.50% 367 3 0.88% 324 9 2.90%

C18:1n7 61.6 3.5 5.63% NA 77.7 13.2 17.00% 54.8 0.3 0.55%

C18:1n9 767 39 5.05% 486 10 2.02% 760 12 1.54% 711 3 0.49%

C18:2n6 1152 65 5.65% 545 14 2.63% 1058 14 1.37% 1145 5 0.40%

C18:3n3 20.9 0.8 3.97% 10.9 0.2 1.94% 24.1 0.4 1.80% 20.5 0.1 0.44%

C18:3n6 19.5 0.4 1.93% NA 28.1 0.6 2.11% 20.2 0.1 0.65%

C20:0 6.23 0.38 6.08% NA 12.2 0.2 1.51% 6.69 0.34 5.04%

C20:1n9 6.44 0.57 8.90% 6.17 0.08 1.28% NA 4.34 0.11 2.59%

C20:2n6 NA NA NA 8.19 0.27 3.31%

C20:3n6 NA 47.8 1.2 2.49% 60.7 0.7 1.07% 61.2 0.2 0.33%

C20:4n6 258 15 5.87% 160 4 2.30% 211 4 2.07% 237 4 1.58%

C20:5n3 25.4 1.6 6.30% 26.6 1.4 5.31% 21.5 0.6 2.99% 20.1 0.2 1.10%

C22:0 15.7 1.1 7.24% NA 28.9 0.5 1.60% 15.4 0.5 3.33%

C22:1n9 1.17 0.07 5.60% NA 2.08 0.00 0.00% 1.33 0.19 14.12%

C22:4n6 NA 11.6 0.2 2.09% 8.04 0.39 4.88% 6.81 0.13 1.91%

C22:5n3 19.9 0.8 4.08% 18.1 0.6 3.56% 18.2 0.9 4.90% 17.2 0.4 2.23%

C22:5n6 NA NA 8.90 0.20 2.19% 6.64 0.14 2.07%

C22:6n3 102 6 5.64% 70.1 3.3 4.74% 81.0 1.8 2.28% 84.3 0.5 0.54%

C24:0 13.8 0.6 4.45% NA 26.6 0.3 1.18% 12.7 0.2 1.77%

C24:1n9 23.5 1.6 6.76% NA 33.1 1.1 3.46% 25.7 2.5 9.72%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 1 Lab 2 Lab 3

a

Lab 4

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0 2.11 0.72 33.93%

C10:1n1

C11:0

C12:0 13.3 0.1 0.74% 7.10 1.37 19.36%

C12:1 0.528 0.048 9.06%

C12:1n7

C13:0

C14:2

C15:0

C16:1n7t

C16:1n9

C16:2

C17:0 13.0 0.4 2.73%

C17:1

C18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3

C19:0

C20:3n3 1.39 0.39 28.15%

C20:3n9 2.68 0.18 6.64%

C20:4n3

C21:0

C22:2n6 1.46 0.23 15.61%

C23:0 6.52 0.32 4.90%

C26:0

C26:1

PhA

PrA

density (g/mL) NA 1.05 0.01 0.67% 0.978 0.003 0.29% 1.06 0.01 0.67%

aReported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
27

Table 6 (Cont). Interlaboratory data received for Unknown 03 (μg/g)

Lab 5 Lab 6 Lab 7

a

Lab 8

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 40.4 1.6 4.04% 39.4 1.9 4.91% NA 50.3 2.1 4.12%

C14:1n5 2.46 0.13 5.45% NA NA 3.35 0.13 3.75%

C16:0 831 11 1.38% 796 38 4.79% NA 1011 41 4.05%

C16:1n7 43.6 0.7 1.51% 37.3 1.7 4.54% NA 52.3 2.1 4.04%

C18:0 306 3 1.13% 359 27 7.51% NA 356 13 3.68%

C18:1n7 37.7 0.4 1.04% 30.0 1.9 6.22% NA 39.6 1.8 4.63%

C18:1n9 643 6 0.88% 569 26 4.58% NA 830 30 3.59%

C18:2n6 1024 9 0.84% 891 41 4.60% NA 1191 47 3.95%

C18:3n3 18.5 0.1 0.36% 2.10 0.09 4.18% NA 20.9 0.8 3.59%

C18:3n6 18.3 0.2 0.84% 9.21 0.27 2.95% NA 23.4 0.8 3.49%

C20:0 6.54 0.10 1.51% 9.29 0.56 6.05% NA 1.51 0.03 2.28%

C20:1n9 3.65 0.10 2.87% 14.2 0.6 4.30% NA 3.36 0.13 3.93%

C20:2n6 7.72 0.08 0.99% 4.88 0.26 5.22% NA 9.05 0.45 5.00%

C20:3n6 60.2 0.6 0.92% NA NA 75.9 3.7 4.87%

C20:4n6 216 2 0.87% 190 9 4.56% 306 7 2.29% 334 11 3.37%

C20:5n3 18.5 0.2 0.97% 11.0 0.4 3.83% 23.3 0.1 0.42% 24.3 0.9 3.56%

C22:0 16.9 0.2 1.46% 59.4 2.7 4.52% NA 0.62 0.05 8.03%

C22:1n9 0.913 0.096 10.48% <LOQ NA NA

C22:4n6 6.11 0.08 1.31% 0.167 0.120 71.76% NA 7.83 0.52 6.65%

C22:5n3 15.2 0.2 1.43% 7.03 0.35 4.92% NA 16.3 0.1 0.69%

C22:5n6 6.02 0.10 1.66% 0.061 0.046 75.04% NA 8.36 0.33 3.96%

C22:6n3 73.6 0.8 1.07% 66.3 3.2 4.76% 110 1 1.20% 105 3 3.06%

C24:0 17.5 0.3 1.95% 9.40 0.24 2.55% NA 0.747 0.011 1.47%

C24:1n9 20.6 0.4 2.03% 9.90 0.33 3.37% NA <LOD

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 5 Lab 6 Lab 7

a

Lab 8

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0

C10:1n1

C11:0

C12:0 2.16 0.14 6.31% 5.01 0.24 4.85%

C12:1

C12:1n7

C13:0

C14:2

C15:0 7.81 0.62 7.88% 11.4 0.4 3.18%

C16:1n7t

C16:1n9

C16:2

C17:0 8.49 0.56 6.58% 12.4 0.4 3.62%

C17:1 2.88 0.32 11.09%

C18:1n7t

C18:1n9t 7.02 0.31 4.37%

C18:1n12

C18:1n12t

9c,11t-C18:2n6 8.82 0.36 4.13%

C18:4n3 1.08 0.08 7.75%

C19:0 0.898 0.021 2.39%

C20:3n3 1.08 0.12 10.68%

C20:3n9

C20:4n3 2.83 0.04 1.36%

C21:0 0.877 0.223 25.46%

C22:2n6

C23:0 4.08 0.16 3.93%

C26:0

C26:1

PhA

PrA

density (g/mL) 1.00 0.00 0.00% 0.980 0.000 0.00% NA 1.03 0.00 0.00%

aReported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
28

Table 6 (Cont). Interlaboratory data received for Unknown 03 (μg/g)

Lab 9

a

Lab 10aLab 11a

Lab 12

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 NA 48.9 1.4 2.77% 41.8 0.5 1.16% 44.5 1.6 3.65%

C14:1n5 NA 3.01 0.02 0.75% 3.44 0.17 4.93% NA

C16:0 1039 4 0.35% 941 23 2.49% 869 38 4.43% 885 32 3.56%

C16:1n7 27.1 0.2 0.64% 48.0 0.9 1.95% 46.7 4.8 10.30% 44.7 1.7 3.90%

C18:0 329 4 1.32% 271 6 2.35% 359 8 2.22% 312 7 2.25%

C18:1n7 NA 34.2 0.4 1.04% 56.9 6.5 11.36% 34.7 0.9 2.64%

C18:1n9 837 19 2.27% 708 19 2.72% 679 26 3.89% 689 29 4.19%

C18:2n6 1228 12 0.95% 1153 36 3.16% 1009 159 15.76% 1097 38 3.45%

C18:3n3 21.1 0.0 0.17% 23.0 0.4 1.84% 21.3 1.4 6.79% 19.5 0.4 1.94%

C18:3n6 NA 21.0 0.5 2.43% 18.8 1.1 5.84% 19.4 0.4 1.81%

C20:0 NA 9.15 0.31 3.34% 9.23 0.71 7.71% NA

C20:1n9 NA 3.80 0.19 4.94% NA

C20:2n6 NA 7.93 0.51 6.44% NA

C20:3n6 NA 61.5 1.3 2.05% 60.9 6.9 11.30% 60.3 1.3 2.23%

C20:4n6 247 5 2.20% 254 3 1.35% 230 20 8.59% 237 11 4.47%

C20:5n3 18.7 0.5 2.73% 21.6 0.5 2.53% 23.9 1.6 6.54% 20.2 0.5 2.44%

C22:0 NA 27.2 0.5 1.74% 23.3 0.3 1.43% 19.4 0.8 4.32%

C22:1n9 NA NA 0.313 0.056 18.00% NA

C22:4n6 NA 7.38 0.30 4.03% 10.4 1.4 13.36% 6.67 0.25 3.77%

C22:5n3 72.5 3.3 4.58% 18.5 0.7 3.62% 22.6 2.1 9.40% 17.2 0.5 2.99%

C22:5n6 NA 7.00 0.15 2.10% 7.39 0.87 11.82% NA

C22:6n3 NA 99.0 1.6 1.61% 73.1 16.8 22.94% 83.4 2.6 3.06%

C24:0 NA 26.2 0.4 1.60% 25.7 0.8 3.29% 19.1 0.5 2.62%

C24:1n9 NA 35.2 1.2 3.53% 31.7 4.9 15.38% 21.4 0.2 0.81%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 9

a

Lab 10aLab 11a

Lab 12

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0 0.915 0.046 5.05%

C10:0 1.07 0.04 3.45% 1.77 0.25 13.85%

C10:1n1 1.08 0.06 6.00%

C11:0

C12:0 3.54 0.07 2.07% 4.55 0.36 7.95%

C12:1 1.01 0.06 5.69%

C12:1n7 0.875 0.056 6.43%

C13:0

C14:2 0.193 0.031 15.99%

C15:0 11.1 0.3 2.55% 9.00 0.37 4.11%

C16:1n7t

C16:1n9 10.1 1.5 14.59%

C16:2 1.00 0.12 12.25%

C17:0 12.4 0.4 3.31% 10.1 1.3 13.02%

C17:1

C18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3 0.739 0.074 9.96%

C19:0 0.960 0.188 19.62%

C20:3n3

C20:3n9 1.91 0.11 6.00% 5.57 0.36 6.48%

C20:4n3

C21:0 0.630 0.121 19.19%

C22:2n6

C23:0 12.2 0.3 2.23% 15.1 3.2 21.28%

C26:0 0.226 0.007 3.04%

C26:1 0.182 0.038 20.74%

PhA 0.690 0.035 5.05%

PrA 0.149 0.005 3.46%

density (g/mL) NA 0.973 0.005 0.46% NA 1.02 0.02 2.14%

aReported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
29

Table 6 (Cont). Interlaboratory data received for Unknown 03 (μg/g)

Lab 13 Lab 14bSummary

Code mean stdev rsd mean stdev rsd median mean n

C14:0 76.3 0.3 0.36% 106 8 7.44% 49.6 54.2 12

C14:1n5 4.97 0.02 0.50% 4.50 0.54 12.08% 3.44 3.71 9

C16:0 1605 2 0.15% 1307 34 2.59% 941 985 13

C16:1n7 85.3 0.2 0.29% 139 8 5.60% 48.0 54.5 13

C18:0 575 5 0.87% 844 13 1.56% 337 384 13

C18:1n7 82.7 0.7 0.86% 1567 63 4.04% 54.8 189 11

C18:1n9 1383 11 0.76% 1111 46 4.11% 711 782 13

C18:2n6 2282 15 0.68% 1102 56 5.10% 1102 1144 13

C18:3n3 44.6 0.2 0.46% 48.4c2.0 4.07% 20.9 20.6 12

C18:3n6 41.6 0.4 1.02% NA 19.8 21.9 10

C20:0 4.49 0.20 4.39% 19.1 5.6 29.36% 7.92 8.45 10

C20:1n9 8.61 0.08 0.97% 18.6 1.1 5.68% 6.17 7.69 9

C20:2n6 23.1 0.4 1.56% 23.2 0.8 3.31% 8.19 12.0 7

C20:3n6 132 2 1.35% 208 5 2.32% 61.1 82.8 10

C20:4n6 487 5 1.09% 829 32 3.91% 242 300 14

C20:5n3 43.1 0.3 0.59% 135 4 3.20% 22.4 31.0 14

C22:0 4.04 0.24 5.97% 95.3 27.3 28.63% 19.4 27.8 11

C22:1n9 6.29 0.20 3.22% 24.1 6.2 25.82% 1.33 5.17 7

C22:4n6 14.2 0.5 3.72% 49.8 2.1 4.26% 7.83 11.7 11

C22:5n3 38.3 1.2 3.04% 45.8 1.9 4.14% 18.2 25.1 13

C22:5n6 14.1 0.4 3.10% 110 4 3.67% 7.39 18.8 9

C22:6n3 178 2 1.02% 453 12 2.66% 84.3 121 13

C24:0 3.95 0.48 12.13% 149 43 28.59% 17.5 27.7 11

C24:1n9 2.88 0.22 7.48% 146 47 32.41% 24.6 34.9 10

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 13 Lab 14bSummary

Code mean stdev rsd mean stdev rsd median mean n

C6:0 0.178 0.036 20.39% 0.178 0.178 1

C8:0 0.346 0.017 5.03% 0.630 0.630 2

C10:0 1.88 0.59 31.28% 1.82 1.71 4

C10:1n1 1.08 1.08 1

C11:0 0.0133 0.0038 28.49% 0.013 0.013 1

C12:0 6.64 0.73 11.04% 5.01 6.04 7

C12:1 0.770 0.770 2

C12:1n7 0.875 0.875 1

C13:0 0.150 0.027 18.37% 0.150 0.150 1

C14:2 0.193 0.193 1

C15:0 20.1 1.7 8.23% 11.1 11.9 5

C16:1n7t 204 8 4.09% 204 204 1

C16:1n9 10.1 10.1 1

C16:2 1.00 1.00 1

C17:0 3.26 0.16 4.86% 11.3 10.0 6

C17:1 2.88 2.88 1

C18:1n7t 1294 54 4.17% 1294 1294 1

C18:1n9t 1441 44 3.07% 724 724 2

C18:1n12 1213 50 4.13% 1213 1213 1

C18:1n12t 1539 55 3.56% 1539 1539 1

9c,11t-C18:2n6 8.82 8.82 1

C18:4n3 0.911 0.911 2

C19:0 0.929 0.929 2

C20:3n3 1.24 1.24 2

C20:3n9 2.68 3.39 3

C20:4n3 2.83 2.83 1

C21:0 3.34 0.57 17.09% 0.877 1.61 3

C22:2n6 1.46 1.46 1

C23:0 9.36 9.46 4

C26:0 0.226 0.226 1

C26:1 0.182 0.182 1

PhA 0.690 0.690 1

PrA 0.149 0.149 1

density (g/mL) 1.05 0.00 0.22% NA 1.02 1.01 9

aReported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
30

Table 7. Interlaboratory data received for Unknown 03 (μM)

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 241 16 6.68% 175 5 2.85% 231 4 1.56% 259 4 1.56%

C14:1n5 14.5 1.4 9.90% NA 20.7 0.6 2.79% 16.7 0.6 3.32%

C16:0 4061 177 4.36% 2505 72 2.89% 3606 55 1.52% 3791 8 0.22%

C16:1n7 205 11 5.38% 112 4 3.29% 202 6 2.98% 220 1 0.36%

C18:0 1183 39 3.26% 957 14 1.50% 1262 11 0.88% 1201 35 2.90%

C18:1n7 218 12 5.63% NA 269 46 17.00% 205 1 0.55%

C18:1n9 2716 137 5.05% 1812 37 2.02% 2632 41 1.54% 2659 13 0.49%

C18:2n6 4108 232 5.65% 2044 54 2.63% 3692 50 1.37% 4311 17 0.40%

C18:3n3 75.1 3.0 3.97% 41.3 0.8 1.94% 84.7 1.5 1.80% 77.7 0.3 0.44%

C18:3n6 70.0 1.3 1.93% NA 98.7 2.1 2.11% 76.4 0.5 0.65%

C20:0 19.9 1.2 6.08% NA 38.3 0.6 1.51% 22.6 1.1 5.04%

C20:1n9 20.7 1.8 8.90% 20.9 0.3 1.28% NA 14.7 0.4 2.59%

C20:2n6 NA NA NA 28.0 0.9 3.31%

C20:3n6 NA 164 4 2.49% 194 2 1.07% 211 1 0.33%

C20:4n6 847 50 5.87% 552 13 2.30% 678 14 2.07% 822 13 1.58%

C20:5n3 84.0 5.3 6.30% 92.6 4.9 5.31% 69.7 2.1 2.99% 70.2 0.8 1.10%

C22:0 46.2 3.3 7.24% NA 83.0 1.3 1.60% 47.6 1.6 3.33%

C22:1n9 3.46 0.19 5.60% NA 6.00 0.00 0.00% 4.14 0.58 14.12%

C22:4n6 NA 36.7 0.8 2.09% 23.7 1.2 4.88% 21.6 0.4 1.91%

C22:5n3 60.2 2.5 4.08% 57.7 2.1 3.56% 54.0 2.6 4.90% 54.8 1.2 2.23%

C22:5n6 NA NA 26.3 0.6 2.19% 21.2 0.4 2.07%

C22:6n3 310 17 5.64% 225 11 4.74% 241 6 2.28% 271 1 0.54%

C24:0 37.5 1.7 4.45% NA 70.6 0.8 1.18% 36.4 0.6 1.77%

C24:1n9 64.2 4.3 6.76% NA 88.3 3.1 3.46% 73.9 7.2 9.72%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0 13.0 4.4 33.93%

C10:1n1

C11:0

C12:0 69.9 0.5 0.74% 37.4 7.2 19.36%

C12:1 2.81 0.25 9.06%

C12:1n7

C13:0

C14:2

C15:0

C16:1n7t

C16:1n9

C16:2

C17:0 50.9 1.4 2.74%

C17:1

C18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3

C19:0

C20:3n3 4.79 1.35 28.15%

C20:3n9 9.23 0.61 6.64%

C20:4n3

C21:0

C22:2n6 4.59 0.72 15.61%

C23:0 19.4 1.0 4.90%

C26:0

C26:1

PhA

PrA

density (g/mL) NA 1.05 0.01 0.67% 0.978 0.003 0.29% 1.06 0.01 0.67%

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
31

Table 7 (cont). Interlaboratory data received for Unknown 03 (μM)

Lab 5

a

Lab 6

a

Lab 7 Lab 8

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 177 7 4.04% 169 8 4.91% NA 226 9 4.12%

C14:1n5 10.9 0.6 5.45% NA NA 15.2 0.6 3.75%

C16:0 3241 45 1.38% 3041 146 4.79% NA 4040 164 4.05%

C16:1n7 171 3 1.51% 144 7 4.54% NA 211 9 4.04%

C18:0 1075 12 1.13% 1236 93 7.51% NA 1283 47 3.68%

C18:1n7 134 1 1.04% 104 6 6.22% NA 144 7 4.63%

C18:1n9 2277 20 0.88% 1973 90 4.58% NA 3010 108 3.59%

C18:2n6 3651 31 0.84% 3111 143 4.60% NA 4353 172 3.95%

C18:3n3 66.3 0.2 0.36% 7.37 0.31 4.18% NA 77.0 2.8 3.59%

C18:3n6 65.6 0.6 0.84% 32.4 1.0 2.95% NA 86.1 3.0 3.49%

C20:0 20.9 0.3 1.51% 29.1 1.8 6.05% NA 4.95 0.11 2.28%

C20:1n9 11.7 0.3 2.87% 44.9 1.9 4.30% NA 11.1 0.4 3.93%

C20:2n6 25.0 0.2 0.99% 15.5 0.8 5.22% NA 30.1 1.5 5.00%

C20:3n6 196 2 0.92% NA NA 254 12 4.87%

C20:4n6 708 6 0.87% 610 28 4.56% 1004 23 2.29% 1123 38 3.37%

C20:5n3 61.3 0.6 0.97% 35.5 1.4 3.83% 76.9 0.3 0.42% 82.3 2.9 3.56%

C22:0 49.7 0.7 1.46% 171 8 4.52% NA 1.87 0.15 8.03%

C22:1n9 2.70 0.28 10.48% <LOQ NA NA

C22:4n6 18.4 0.2 1.31% 0.491 0.352 71.76% NA 24.1 1.6 6.65%

C22:5n3 46.0 0.7 1.43% 20.8 1.0 4.92% NA 50.5 0.3 0.69%

C22:5n6 18.2 0.3 1.66% 0.182 0.137 75.04% NA 25.9 1.0 3.96%

C22:6n3 224 2 1.07% 198 9 4.76% 336 4 1.20% 327 10 3.06%

C24:0 47.5 0.9 1.95% 25.0 0.6 2.55% NA 2.08 0.03 1.47%

C24:1n9 56.1 1.1 2.03% 26.5 0.9 3.37% NA <LOD

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 5

a

Lab 6

a

Lab 7 Lab 8

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0

C10:0

C10:1n1

C11:0

C12:0 10.6 0.7 6.31% 25.6 1.2 4.85%

C12:1

C12:1n7

C13:0

C14:2

C15:0 31.6 2.5 7.88% 48.2 1.5 3.18%

C16:1n7t

C16:1n9

C16:2

C17:0 30.8 2.0 6.58% 47.1 1.7 3.62%

C17:1 10.5 1.2 11.09%

C18:1n7t

C18:1n9t 24.3 1.1 4.37%

C18:1n12

C18:1n12t

9c,11t-C18:2n6 32.2 1.3 4.13%

C18:4n3 4.02 0.31 7.75%

C19:0 3.08 0.07 2.39%

C20:3n3 3.61 0.39 10.68%

C20:3n9

C20:4n3 9.51 0.13 1.36%

C21:0 2.75 0.07 2.58%

C22:2n6

C23:0 11.3 0.4 3.93%

C26:0

C26:1

PhA

PrA

density (g/mL) 1.00 0.00 0.00% 0.980 0.000 0.00% NA 1.03 0.00 0.00%

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
32

Table 7 (cont). Interlaboratory data received for Unknown 03 (μM)

Lab 9 Lab 10 Lab 11 Lab 12a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C14:0 NA 208 6 2.77% 183 2 1.16% 199 7 3.65%

C14:1n5 NA 12.9 0.1 0.75% 15.2 0.7 4.93% NA

C16:0 4052 14 0.35% 3571 89 2.49% 3387 150 4.43% 3519 125 3.56%

C16:1n7 106 1 0.64% 184 4 1.95% 184 19 10.30% 179 7 3.90%

C18:0 1156 15 1.32% 928 22 2.35% 1261 28 2.22% 1117 25 2.25%

C18:1n7 NA 118 1 1.04% 202 23 11.36% 125 3 2.64%

C18:1n9 2962 67 2.27% 2437 66 2.72% 2402 94 3.89% 2487 104 4.19%

C18:2n6 4380 42 0.95% 3998 126 3.16% 3599 567 15.76% 3988 138 3.45%

C18:3n3 75.8 0.1 0.17% 80.4 1.5 1.84% 76.6 5.2 6.79% 71.5 1.4 1.94%

C18:3n6 NA 73.3 1.8 2.43% 67.4 3.9 5.84% 70.9 1.3 1.81%

C20:0 NA 28.5 0.9 3.34% 29.5 2.3 7.71% NA

C20:1n9 NA 11.9 0.6 4.94% NA NA

C20:2n6 NA 25.0 1.6 6.44% NA NA

C20:3n6 NA 195 4 2.05% 199 22 11.30% 201 4 2.23%

C20:4n6 812 18 2.20% 812 11 1.35% 756 65 8.59% 794 35 4.47%

C20:5n3 61.8 1.7 2.73% 69.4 1.8 2.53% 79.1 5.2 6.54% 68.2 1.7 2.44%

C22:0 NA 77.6 1.4 1.74% 68.5 1.0 1.43% 58.2 2.5 4.32%

C22:1n9 NA NA 0.923 0.166 18.00% NA

C22:4n6 NA 21.6 0.9 4.03% 31.4 4.2 13.36% 20.4 0.8 3.77%

C22:5n3 219 10 4.58% 54.6 2.0 3.62% 68.2 6.4 9.40% 53.0 1.6 2.99%

C22:5n6 NA 20.6 0.4 2.10% 22.3 2.6 11.82% NA

C22:6n3 NA 293 5 1.61% 222 51 22.94% 259 8 3.06%

C24:0 NA 69.2 1.1 1.60% 69.8 2.3 3.29% 52.9 1.4 2.62%

C24:1n9 NA 93.3 3.3 3.53% 86.5 13.3 15.38% 59.5 0.5 0.81%

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 9 Lab 10 Lab 11 Lab 12a

Code mean stdev rsd mean stdev rsd mean stdev rsd mean stdev rsd

C6:0

C8:0 6.34 0.32 5.05%

C10:0 6.06 0.21 3.45% 10.3 1.4 13.85%

C10:1n1 6.36 0.38 6.00%

C11:0

C12:0 17.2 0.4 2.07% 22.7 1.8 7.95%

C12:1 5.10 0.29 5.69%

C12:1n7 4.41 0.28 6.43%

C13:0

C14:2 0.860 0.137 15.99%

C15:0 44.6 1.1 2.55% 37.1 1.5 4.11%

C16:1n7t

C16:1n9 39.8 5.8 14.59%

C16:2 3.95 0.48 12.25%

C17:0 44.6 1.5 3.31% 37.4 4.9 13.02%

C17:1

C18:1n7t

C18:1n9t

C18:1n12

C18:1n12t

9c,11t-C18:2n6

C18:4n3 2.60 0.26 9.96%

C19:0 3.22 0.63 19.62%

C20:3n3

C20:3n9 6.06 0.36 6.00% 18.2 1.2 6.48%

C20:4n3

C21:0 1.93 0.37 19.19%

C22:2n6

C23:0 33.5 0.7 2.23% 42.5 9.0 21.28%

C26:0 0.570 0.017 3.04%

C26:1 0.460 0.095 20.74%

PhA 2.21 0.11 5.05%

PrA 0.500 0.017 3.46%

density (g/mL) NA 0.973 0.005 0.46% NA 1.02 0.02 2.14%

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
33

Table 7 (cont). Interlaboratory data received for Unknown 03 (μM)

Lab 13aLab 14b

Summary

Code mean stdev rsd mean stdev rsd median mean n

C14:0 349 1 0.36% 466 35 7.44% 217 240 12

C14:1n5 22.9 0.1 0.50% 19.9 2.4 12.08% 15.2 16.5 9

C16:0 6541 10 0.15% 5095 132 2.59% 3606 3881 13

C16:1n7 350 1 0.29% 545 30 5.60% 184 216 13

C18:0 2114 18 0.87% 2966 46 1.56% 1201 1365 13

C18:1n7 306 3 0.86% 5547 224 4.04% 202 670 11

C18:1n9 5116 39 0.76% 3932 162 4.11% 2632 2801 13

C18:2n6 8504 58 0.68% 3930 201 5.10% 3988 4129 13

C18:3n3 168 1 0.46% 174c7 4.07% 76.2 75.1 12

C18:3n6 156 2 1.02% NA 72.1 79.7 10

C20:0 15.0 0.7 4.39% 61.1 17.9 29.36% 25.5 27.0 10

C20:1n9 29.0 0.3 0.97% 60.0 3.4 5.68% 20.7 25.0 9

C20:2n6 78.4 1.2 1.56% 75.3 2.5 3.31% 28.0 39.6 7

C20:3n6 449 6 1.35% 678 16 2.32% 200 274 10

C20:4n6 1672 18 1.09% 2722 106 3.91% 812 994 14

C20:5n3 149 1 0.59% 447.0 14.3 3.20% 73.5 103.3 14

C22:0 12.4 0.7 5.97% 279.8 80.1 28.63% 58.2 81.4 11

C22:1n9 19.4 0.6 3.22% 71.09 18.36 25.82% 4.14 15.39 7

C22:4n6 44.6 1.7 3.72% 149.7 6.4 4.26% 23.7 35.7 11

C22:5n3 121 4 3.04% 138.6 5.7 4.14% 54.8 76.8 13

C22:5n6 44.7 1.4 3.10% 333.9 12.3 3.67% 22.3 57.1 9

C22:6n3 568 6 1.02% 1379 37 2.66% 271 373 13

C24:0 11.2 1.4 12.13% 403.9 115.5 28.59% 47.5 75.1 11

C24:1n9 8.22 0.62 7.48% 397.0 128.7 32.41% 69.1 95.4 10

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 13aLab 14b

Summary

Code mean stdev rsd mean stdev rsd median mean n

C6:0 1.53 0.31 20.39% 1.53 1.53 1

C8:0 2.40 0.12 5.03% 4.37 4.37 2

C10:0 10.9 3.4 31.28% 10.6 10.1 4

C10:1n1 6.36 6.36 1

C11:0 0.0715 0.0204 28.49% 0.0715 0.0715 1

C12:0 33.1 3.7 11.04% 25.6 30.9 7

C12:1 3.95 3.95 2

C12:1n7 4.41 4.41 1

C13:0 6.98 0.13 18.37% 6.98 6.98 1

C14:2 0.860 0.860 1

C15:0 83.0 6.8 8.23% 44.6 48.9 5

C16:1n7t 802 33 4.09% 802 802 1

C16:1n9 39.8 39.8 1

C16:2 3.95 3.95 1

C17:0 12.1 0.6 4.86% 41.0 37.1 6

C17:1 10.5 10.5 1

C18:1n7t 4580 191 4.17% 4580 4580 1

C18:1n9t 5100 157 3.07% 2562 2562 2

C18:1n12 4292 177 4.13% 4292 4292 1

C18:1n12t 5448 194 3.56% 5448 5448 1

9c,11t-C18:2n6 32.2 32.2 1

C18:4n3 3.31 3.31 2

C19:0 3.15 3.15 2

C20:3n3 4.20 4.20 2

C20:3n9 9.23 11.2 3

C20:4n3 9.51 9.51 1

C21:0 10.2 1.7 17.09% 2.75 4.97 3

C22:2n6 4.59 4.59 1

C23:0 26.4 26.6 4

C26:0 0.570 0.570 1

C26:1 0.460 0.460 1

PhA 2.21 2.21 1

PrA 0.500 0.500 1

density (g/mL) 1.05 0.00 0.22% NA 1.02 1.01 9

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
34

Table 8. Interlaboratory data received for SRM 2378-1 (μg/g)

Lab 1 Lab 2 Lab 3

a

Lab 4 Lab 5 Lab 6 Lab 7

a

Lab 8

a

Lab 9

a

Lab 10aLab 11a

Lab 12 Lab 13 Lab 14b

Code Cert or Ref Value

C14:0 44.6 ± 1.5 44.0 40.3 50.1 51.7 38.5 37.4 NA 53.5 NA 46.3 38.1 38.1 73.1 89.6

C14:1n5 3.4 ± 1.5 3.49 NA 4.41 3.07 2.40 NA NA 3.33 NA 2.76 3.09 NA 4.53 3.20

C16:0 833 ± 87 847 544 822 806 718 694 NA 953 756 825 722 707 1417 65.8

C16:1n7 53.4 ± 3.8 51.0 31.4 55.3 56.7 48.4 39.9 NA 67.3 49.9 54.9 49.1 44.4 94.9 123

C18:0 221 ± 25 240 206 271 244 226 298 NA 280 209 210 231 204 441 594

C18:1n7 41.3 ± 7.4 42.8 NA 71.6 51.3 41.5 31.0 NA 47.1 NA 41.9 52.2 36.1 94.0 1198

C18:1n9 604 ± 66 595 412 636 593 534 467 NA 780 534 603 553 510 1164 833

C18:2n6 1026 ± 176 1073 508 931 983 870 760 NA 1168 840 1004 798 849 2011 793

C18:3n3 32.5 ± 4.1 33.4 19.8 33.1 29.1 26.0 2.28 NA 34.5 37.5 33.4 28.9 24.6 66.4 64.4c

C18:3n6 12.3 ± 1.6 12.8 NA 16.3 11.7 10.4 1.76 NA 14.9 NA 12.2 11.3 9.60 25.2 NA

C20:0 7.6 ± 1.1 7.70 NA 10.6 5.37 5.79 9.81 NA 2.65 NA 8.41 8.29 NA 6.01 16.3

C20:1n9 6.0 ± 1.0 5.51 7.09 NA 4.71 4.07 20.8 NA 5.18 NA 4.72 NA NA 10.5 23.2

C20:2n6 NA NA NA 5.02 4.59 2.30 NA 6.38 NA 4.92 NA NA 15.5 12.8

C20:3n6 NA 27.1 33.6 31.1 31.0 NA NA 38.3 NA 31.5 31.5 27.6 70.8 104

C20:4n6 196 ± 20 192 139 174 190 172 155 243 292 187 210 176 153 409 640

C20:5n3 84 ± 11 83.6 66.6 85.0 79.7 71.8 54.7 77.1 108 68.0 92.1 80.7 69.2 176 385

C22:0 18.8 ± 4.3 17.9 NA 23.8 11.8 13.9 33.6 NA 1.34 NA 22.3 18.6 16.4 6.32 88.6

C22:1n9 1.7 ± 1.0 1.85 NA 2.43 1.77 1.29 <LOQ NA NA NA NA 0.301 NA 7.87 15.6

C22:4n6 NA 10.26 4.44 3.96 3.57 <LOQ NA 5.32 NA 4.43 5.68 3.50 8.94 29.6

C22:5n3 22.4 ± 1.2 22.3 24.1 23.4 22.2 19.0 10.7 NA 21.4 87.5 23.8 25.9 19.0 53.4 19.9

C22:5n6 NA NA 3.39 2.99 2.41 <LOQ NA 3.52 NA 2.98 3.17 NA 6.32 135

C22:6n3 104 ± 5 106 90.9 94.7 97.7 82.9 76.3 98.2 130 NA 115 65.7 84.1 214 477

C24:0 19 ± 5 15.6 NA 22.9 11.0 15.0 10 NA 1.24 NA 22.9 22.6 16.5 3.58 136

C24:1n9 32 ± 9 34.5 NA 33.5 18.9 19.6 12.5 NA <LOD NA 36.2 34.0 22.5 3.91 159

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 1 Lab 2 Lab 3

a

Lab 4 Lab 5 Lab 6 Lab 7

a

Lab 8

a

Lab 9

a

Lab 10aLab 11a

Lab 12 Lab 13 Lab 14b

Code Cert or Ref Value

C6:0 0.130

C8:0 1.45 1.11

C10:0 3.56 ± 0.04 5.73 3.63 3.91 5.54

C10:1n1 1.31

C11:0 0.0197

C12:0 15.1 8.88 3.56 8.62 5.65 6.31 10.4

C12:1 0.393 0.946

C12:1n7 0.805

C13:0 0.135

C14:2 0.218

C15:0 5.14 ± 0.16 3.01 6.67 6.05 4.92 8.37

C16:1n7t

C16:1n9 8.34

C16:2 1.38

C17:0 7.11 ± 0.47 8.50 4.34 7.76 7.77 6.55 1.21

C17:1 0.919

C18:1n7t 984

C18:1n9t 1137

C18:1n12 905

C18:1n12t 2.89 1207

9c,11t-C18:2n6 2.82

C18:4n3 3.86 2.29

C19:0 0.865 0.872

C20:3n3 1.42 0.625

C20:3n9 1.40 ± 0.09 1.83 1.36 5.50

C20:4n3 2.58

C21:0 3.82 0.460 3.48

C22:2n6 0.31 ± 0.02 1.43

C23:0 8.19 ± 0.19 4.30 3.18 9.18 11.7

C26:0 0.305

C26:1 0.300

PhA 0.559

PrA 0.125

density (g/mL) 1.02 NA 1.04 0.975 1.06 1.00 0.96 NA 1.03 NA 0.952 NA 1.01 1.04 NA

a Reported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
35

Table 9. Interlaboratory data received for SRM 2378-1 (μM)

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Lab 5

a

Lab 6

a

Lab 7 Lab 8 Lab 9 Lab 10 Lab 11 Lab 12a

Lab 13aLab 14b

Code Cert or Ref Value

C14:0 200 ± 7 193 184 214 239 169 157 NA 240 NA 193 167 168 332 392

C14:1n5 16 ± 7 15.4 NA 19.0 14.4 10.6 NA NA 15.1 NA 11.6 13.7 NA 20.7 14.1

C16:0 3321 ± 347 3303 2212 3126 3326 2799 2599 NA 3810 2949 3064 2817 2771 5726 256

C16:1n7 214 ± 15 201 129 212 236 190 151 NA 271 196 206 193 175 386 482

C18:0 795 ± 90 844 756 930 908 793 1006 NA 1010 736 702 810 721 1608 2089

C18:1n7 149 ± 27 151 NA 247 192 147 106 NA 171 NA 141 185 128 345 4241

C18:1n9 2186 ± 240 2106 1521 2196 2220 1891 1585 NA 2830 1889 2031 1956 1814 4268 2948

C18:2n6 3741 ± 643 3826 1889 3234 3707 3101 2603 NA 4270 2994 3408 2844 3042 7430 2829

C18:3n3 119 ± 15 120 74.3 116 111 93.2 7.87 NA 127 135 114 104 88.8 247 231c

C18:3n6 45.1 ± 6.0 46.0 NA 57.0 44.5 37.2 6.06 NA 54.7 NA 41.5 40.4 34.6 93.8 NA

C20:0 25.0 ± 3.6 24.6 NA 33.0 18.2 18.5 30.1 NA 8.70 NA 25.6 26.5 NA 19.9 52.1

C20:1n9 19.7 ± 3.3 17.7 23.8 NA 16.0 13.1 64.3 NA 17.1 NA 14.5 NA NA 35.1 74.7

C20:2n6 NA NA NA 17.2 14.9 7.15 NA 21.2 NA 15.2 NA NA 52.1 41.5

C20:3n6 NA 92.3 107 107 101 NA NA 128 NA 97.9 103 90.5 239 341

C20:4n6 659 ± 69 631 477 558 661 565 490 797 984 614 656 577 505 1392 2101

C20:5n3 284 ± 37 276 230 274 279 237 173.6 255 366 225 290 267 230 604 1271

C22:0 57 ± 13 52.5 NA 68.0 36.6 40.9 94.8 NA 4.02 NA 62.3 54.6 48.4 19.2 260

C22:1n9 5 ± 3 5.46 NA 7.00 5.52 3.80 <LOQ NA NA NA NA 0.890 NA 24.1 46.2

C22:4n6 NA 32.2 13.0 12.6 10.7 <LOQ NA 16.4 NA 12.7 17.1 10.6 27.8 89.1

C22:5n3 69.4 ± 3.6 67.6 75.9 69.0 71.1 57.5 31.0 NA 66.4 265 68.5 78.4 57.8 167 60.3

C22:5n6 NA NA 10.0 9.56 7.31 <LOQ NA 10.9 NA 8.59 9.58 NA 19.8 407

C22:6n3 323 ± 16 323 289 281 315 252 223 299 407 NA 333 200 257 674 1452

C24:0 54 ± 13 42.2 NA 60.5 31.6 40.8 27 NA 3.46 NA 59.1 61.3 45.0 10.1 370

C24:1n9 89 ± 26 94.2 NA 89.0 54.5 53.6 32.7 NA <LOD NA 94.0 92.6 61.7 11.1 433

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Lab 5

a

Lab 6

a

Lab 7 Lab 8 Lab 9 Lab 10 Lab 11 Lab 12a

Lab 13aLab 14b

Code Cert or Ref Value

C6:0 1.12

C8:0 10.1 7.68

C10:0 21.1 ± 0.2 35.2 20.1 22.7 32.2

C10:1n1 7.71

C11:0 0.106

C12:0 78.9 46.9 17.1 44.1 26.8 31.5 51.9

C12:1 2.10 4.77

C12:1n7 4.06

C13:0 0.629

C14:2 0.970

C15:0 21.7 ± 0.7 11.9 28.2 23.8 20.3 34.5

C16:1n7t 651

C16:1n9 32.8

C16:2 5.47

C17:0 26.9 ± 1.7 33.3 15.4 29.4 27.3 24.2 4.48

C17:1 3.29

C18:1n7t 3483

C18:1n9t 4024

C18:1n12 3203

C18:1n12t 9.82 4274

9c,11t-C18:2n6 10.3

C18:4n3 14.3 7.88

C19:0 2.97 2.92

C20:3n3 4.88 2.09

C20:3n9 4.67 ± 0.29 6.31 4.24 17.9

C20:4n3 8.68

C21:0 12.0 1.41 10.6

C22:2n6 0.93 ± 0.06 4.51

C23:0 23.6 ± 0.5 12.8 8.61 24.6 33.1

C26:0 0.770

C26:1 0.760

PhA 1.79

PrA 0.420

density (g/mL) 1.02 NA 1.04 0.975 1.06 1.00 0.96 NA 1.03 NA 0.952 NA 1.01 1.04 NA

aReported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
Table 10.Interlaboratory data received for SRM 2378-2 (μg/g)

Lab 1 Lab 2 Lab 3

a

Lab 4 Lab 5 Lab 6 Lab 7

a

Lab 8

a

Lab 9

a

Lab 10aLab 11a

Lab 12 Lab 13 Lab 14b

Code Cert or Ref Value

C14:0 33.8 ± 1.2 34.0 26.4 40.0 43.9 28.9 28.9 NA 37.0 NA 28.5 29.0 30.6 54.4 65.5

C14:1n5 2.8 ± 1.5 2.34 NA 3.71 2.92 1.73 NA NA 2.43 NA 1.75 2.64 NA 3.45 2.17

C16:0 715 ± 111 661 431 829 788 706 689 NA 881 707 695 705 726 1371 1083

C16:1n7 69.1 ± 6.9 67.4 33.2 70.1 70.6 59.6 49.2 NA 80.9 49.6 52.1 57.9 60.4 117.1 149

C18:0 231 ± 14 224 184 307 259 250 313 NA 289 246 219 263 250 473 682

C18:1n7 35.6 ± 6.0 39.5 NA 78.4 53.3 42.8 34.0 NA 46.0 NA 33.4 57.3 38.3 93.0 1425

C18:1n9 738 ± 52 750 467 800 773 701 626 NA 970 753 598 688 718 1501 960

C18:2n6 1224 ± 12 1202 520 1129 1244 1110 981 NA 1401 1118 972 943 1150 2502 939

C18:3n3 31.5 ± 1.3 31.4 16.5 33.9 29.6 27.3 2.18 NA 34.0 37.8 28.3 28.8 27.6 66.1 64.8c

C18:3n6 21.0 ± 0.4 21.2 NA 27.9 20.2 18.7 9.51 NA 27.2 NA 16.2 18.0 19.6 43.7 NA

C20:0 8.7 ± 1.5 8.13 NA 12.2 6.45 6.43 10.0 NA 1.55 NA 9.16 9.28 NA 3.82 20.2

C20:1n9 5.7 ± 1.0 5.49 6.35 NA 4.62 4.27 21.4 NA 4.21 NA 3.81 NA NA 9.64 22.9

C20:2n6 NA NA NA 6.48 6.19 3.45 NA 7.56 NA 6.16 NA NA 20.3 16.8

C20:3n6 NA 40.1 56.2 56.6 56.3 NA NA 67.6 NA 55.3 50.0 55.2 125.1 185

C20:4n6 235 ± 26 215 147 221 248 225 203 484 368 238 234 220 230 517 769

C20:5n3 20.7 ± 0.8 20.3 25.6 21.7 22.8 18.5 11.2 22.5 24.4 33.2 18.5 22.6 19.3 43.5 128

C22:0 28.7 ± 8.8 29.2 NA 34.8 18.7 20.8 62.4 NA 0.804 NA 33.7 28.7 22.2 4.32 123

C22:1n9 1.7 ± 0.9 1.47 NA 2.43 2.00 1.10 <LOQ NA NA NA NA 0.284 NA 6.56 31.1

C22:4n6 NA 11.4 8.17 6.54 6.13 0.067 NA 7.88 NA 7.71 8.89 6.70 14.9 48.1

C22:5n3 17.0 ± 0.8 17.2 17.3 16.9 16.5 13.9 6.21 NA 17.2 60.4 17.1 18.5 15.2 38.4 31.3

C22:5n6 NA NA 6.77 4.92 4.32 <LOQ NA 6.06 NA 5.18 4.91 NA 10.8 93.4

C22:6n3 55.4 ± 2.3 56.1 44.5 49.4 53.3 44.6 40.3 77.9 62.5 NA 57.4 40.1 48.8 111 256

C24:0 25 ± 9 21.9 NA 29.8 15.7 20.0 14.3 NA 0.892 NA 29.9 28.0 19.0 2.91 160

C24:1n9 30 ± 17 25.7 NA 32.3 25.9 18.4 11.9 NA <LOD NA 34.5 28.0 20.0 2.14 139

List any additional information such as known coelutions or results for additionalfatty acids below:

Lab 1 Lab 2 Lab 3

a

Lab 4 Lab 5 Lab 6 Lab 7

a

Lab 8

a

Lab 9

a

Lab 10aLab 11a

Lab 12 Lab 13 Lab 14b

Code Cert or Ref Value

C6:0 0.126

C8:0 0.840 0.224

C10:0 0.3 ± 0.1 0.928 0.334 1.01 0.402

C10:1n1 1.07

C11:0 0.0045

C12:0 12.3 4.04 0.963 3.36 1.96 3.23 3.49

C12:1 0.280 0.964

C12:1n7 0.817

C13:0 0.0635

C14:2 0.193

C15:0 6.76 ± 0.16 4.07 8.33 6.49 6.08 11.1

C16:1n7t 216

C16:1n9 11.9

C16:2 1.32

C17:0 8.84 ± 0.21 9.85 6.18 9.13 8.24 7.79 1.77

C17:1 2.19

C18:1n7t 1183

C18:1n9t 1302

C18:1n12 1055

C18:1n12t 3.30 1419

9c,11t-C18:2n6 4.98

C18:4n3 1.86 1.00

C19:0 0.629 8.60

C20:3n3 1.11 0.7

C20:3n9 2.13 ± 0.07 2.68 1.74 5.66

C20:4n3 3.09

C21:0 0.870 0.673 4.13

C22:2n6 0.36 ± 0.03 1.52

C23:0 13.1 ± 0.5 7.10 5.28 13.9 14.9

C26:0 0.218

C26:1 0.162

PhA 0.291

PrA 0.045

density (g/mL) 1.02 NA 1.04 0.977 1.06 1.00 1.00 NA 1.03 NA 0.954 NA 1.01 1.04 NA

a Reported as μM 36

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
Table 11.Interlaboratory data received for SRM 2378-2 (μM)

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Lab 5

a

Lab 6

a

Lab 7 Lab 8 Lab 9 Lab 10 Lab 11 Lab 12a

Lab 13aLab 14b

Code Cert or Ref Value

C14:0 151 ± 5 149 120 171 203 127 127 NA 166 NA 119 127 135 248 287

C14:1n5 13 ± 7 10.3 NA 16.0 13.6 7.65 NA NA 11.0 NA 7.36 11.7 NA 15.9 9.58

C16:0 2851 ± 442 2578 1750 3158 3246 2755 2686 NA 3520 2757 2587 2751 2845 5559 4223

C16:1n7 278 ± 28 265 136 269 293 234 193 NA 326 195 195 227 239 479 587

C18:0 830 ± 50 787 674 1055 962 877 1102 NA 1040 865 735 924 883 1729 2397

C18:1n7 129 ± 22 140 NA 271 199 152 120 NA 167 NA 113 203 136 342 5046

C18:1n9 2672 ± 189 2655 1719 2768 2891 2481 2217 NA 3520 2665 2021 2436 2554 5526 3398

C18:2n6 4464 ± 45 4286 1929 3933 4686 3958 3498 NA 5120 3985 3306 3363 4121 9276 3348

C18:3n3 116 ± 5 113 61.8 119 112 98.0 7.82 NA 125 136 96.8 103 99.6 247 233c

C18:3n6 77.1 ± 1.4 76.0 NA 98.0 76.8 67.2 34.2 NA 100 NA 55.6 64.7 70.7 163 NA

C20:0 28.4 ± 4.8 26.0 NA 38.0 21.8 20.6 32.0 NA 5.08 NA 28.0 29.7 NA 12.7 64.5

C20:1n9 18.9 ± 3.4 17.7 21.3 NA 15.7 13.7 69.0 NA 13.9 NA 11.7 NA NA 32.3 73.9

C20:2n6 NA NA NA 22.2 20.0 11.2 NA 25.1 NA 19.0 NA NA 68.4 54.4

C20:3n6 NA 136 179 195 184 NA NA 226 NA 172 163 181 425 603

C20:4n6 790 ± 86 706 503 709 860 738 666 1588 1240 782 734 724 759 1767 2526

C20:5n3 70.1 ± 2.6 67.1 87.9 70.0 79.5 61.1 37.0 74.5 82.6 110 58.3 74.8 64.1 150 423

C22:0 86 ± 27 85.8 NA 99.9 57.9 61.1 183 NA 2.4 NA 94.4 84.1 65.5 13.2 360

C22:1n9 5 ± 3 4.34 NA 7.00 6.22 3.24 <LOQ NA NA NA NA 0.840 NA 20.1 92.0

C22:4n6 NA 35.8 24.0 20.8 18.4 0.201 NA 24.3 NA 22.1 26.7 20.2 46.7 145

C22:5n3 52.6 ± 2.4 52.0 54.5 50.0 52.8 41.9 18.8 NA 53.3 183 49.2 56.0 46.2 121 94.8

C22:5n6 NA NA 20.0 15.7 13.1 <LOQ NA 18.8 NA 14.9 14.8 NA 33.8 283

C22:6n3 173 ± 7 171 141 147 171 136 123 237 195 NA 167 122 149 352 778

C24:0 70 ± 25 59.3 NA 79.1 45.1 54.4 38.9 NA 2.48 NA 77.3 75.9 51.8 8.22 433

C24:1n9 83 ± 49 70.0 NA 86.0 74.7 50.2 32.5 NA <LOD NA 89.7 76.4 54.8 6.07 379

List any additional information such as known coelutions or results for additionalfatty acids below:

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Lab 5

a

Lab 6

a

Lab 7 Lab 8 Lab 9 Lab 10 Lab 11 Lab 12a

Lab 13aLab 14b

Code Cert or Ref Value

C6:0 1.08

C8:0 5.82 1.56

C10:0 1.9± 0.8 5.69 1.85 5.89 2.33

C10:1n1 6.27

C11:0 0.0240

C12:0 63.9 21.3 4.81 17.2 9.32 16.1 17.4

C12:1 1.49 4.86

C12:1n7 4.12

C13:0 0.296

C14:2 0.860

C15:0 29.0 ± 0.7 16.8 35.2 25.5 25.1 45.9

C16:1n7t 849

C16:1n9 46.9

C16:2 5.22

C17:0 33.4 ± 0.8 38.5 22.9 34.6 29.1 28.8 6.53

C17:1 8.17

C18:1n7t 4187

C18:1n9t 4608

C18:1n12 3733

C18:1n12t 11.7 5024

9c,11t-C18:2n6 18.2

C18:4n3 6.90 3.46

C19:0 2.16 28.8

C20:3n3 3.81 2.23

C20:3n9 7.10 ± 0.23 9.25 5.42 18.5

C20:4n3 10.4

C21:0 2.73 2.06 12.6

C22:2n6 1.09 ± 0.09 4.77

C23:0 37.9 ± 1.5 21.2 14.9 37.5 42.1

C26:0 0.550

C26:1 0.410

PhA 0.930

PrA 0.150

density (g/mL) 1.02 NA 1.04 0.977 1.06 1.00 1.00 NA 1.03 NA 0.954 NA 1.01 1.04 NA

a Reported as μg/g 37

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
38

Table 12. Interlaboratory data received for SRM 2378-3 (μg/g)

Lab 1 Lab 2 Lab 3

a

Lab 4 Lab 5 Lab 6 Lab 7

a

Lab 8

a

Lab 9

a

Lab 10aLab 11a

Lab 12 Lab 13 Lab 14b

Code Cert or Ref Value

C14:0 34.6 ± 0.8 35.4 33.1 40.6 41.2 27.3 29.0 NA 37.4 NA 33.9 27.1 31.7 57.3 54.7

C14:1n5 3.2 ± 1.7 3.29 NA 3.93 6.06 1.68 NA NA 2.74 NA 2.30 2.53 NA 3.86 2.03

C16:0 642 ± 114 605 463 695 652 584 557 NA 703 599 633 537 589 1175 899

C16:1n7 45.7 ± 3.2 43.1 27.6 47.1 48.6 39.6 31.6 NA 50.9 49.5 41.4 37.5 39.5 81.4 82.9

C18:0 194 ± 21 189 197 255 221 210 263 NA 231 180 188 187 208 413 458

C18:1n7 32.0 ± 3.3 31.9 NA 66.7 44.1 33.0 23.9 NA 34.4 NA 29.6 59.2 30.6 76.2 1037

C18:1n9 569 ± 66 547 413 593 556 490 416 NA 650 515 492 510 508 1094 673

C18:2n6 913 ± 6 909 498 876 940 820 682 NA 996 792 852 758 867 1918 581

C18:3n3 17.0 ± 0.1 17.1 10.9 18.8 16.6 14.3 2.04 NA 16.7 37.6 17.0 16.6 14.5 36.0 29.7c

C18:3n6 14.6 ± 1.0 13.9 NA 19.1 14.3 12.3 4.25 NA 16.4 NA 13.1 13.1 12.7 29.7 NA

C20:0 7.9 ± 2.7 7.74 NA 8.94 5.18 4.90 8.46 NA 2.10 NA 6.50 6.19 NA 5.36 12.2

C20:1n9 5.88 ± 0.43 5.44 7.15 NA 4.83 4.33 10.4 NA 4.39 NA 4.28 NA NA 10.3 11.8

C20:2n6 NA NA NA 5.69 5.06 2.50 NA 5.51 NA 5.24 NA NA 18.3 11.5

C20:3n6 NA 31.7 37.0 36.1 34.3 NA NA 36.5 NA 34.5 37.6 34.1 78.7 100

C20:4n6 228 ± 14 227 172 196 226 200 171 439 309 204 232 206 216 476 608

C20:5n3 18.9 ± 2.2 19.4 27.7 18.5 18.0 15.9 8.86 19.8 19.7 26.3 18.6 21.1 16.8 38.6 98.7

C22:0 19.2 ± 4.5 19.0 NA 23.3 12.4 14.0 35.2 NA 1.64 NA 22.0 16.2 15.1 6.61 79.1

C22:1n9 1.9 ± 1.3 1.77 NA 2.08 1.77 1.03 <LOQ NA NA NA NA 0.288 NA 7.14 12.7

C22:4n6 NA 12.2 6.12 5.96 5.14 <LOQ NA 6.52 NA 6.08 9.30 5.20 12.2 35.6

C22:5n3 11.4 ± 0.6 12.1 15.4 10.8 11.4 9.38 3.10 NA 10.4 65.5 11.7 16.1 11.1 28.9 27.6

C22:5n6 NA NA 5.7 5.3 4.14 <LOQ NA 5.51 NA 5.15 6.16 NA 10.5 61.2

C22:6n3 54.9 ± 2.4 54.4 53.6 46.7 53.3 43.9 37.5 82.1 59.3 NA 60.0 51.2 49.2 112 233

C24:0 18 ± 6 16.9 NA 20.5 11.0 13.1 8.74 NA 1.36 NA 20.5 17.2 14.1 2.06 114

C24:1n9 22 ± 9 19.6 NA 22.9 16.7 13.1 7.70 NA <LOD NA 24.1 23.0 14.1 1.98 106

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 1 Lab 2 Lab 3

a

Lab 4 Lab 5 Lab 6 Lab 7

a

Lab 8

a

Lab 9

a

Lab 10aLab 11a

Lab 12 Lab 13 Lab 14b

Code Cert or Ref Value

C6:0 0.0640

C8:0 0.757 0.188

C10:0 0.89 ± 0.15 1.47 0.848 1.35 0.779

C10:1n1 0.857

C11:0 0.0052

C12:0 14.9 8.19 3.70 7.62 5.37 5.73 7.85

C12:1 0.344 0.809

C12:1n7 0.684

C13:0 0.0632

C14:2 0.213

C15:0 4.92 ± 0.12 2.63 5.49 5.28 4.24 6.15

C16:1n7t 121

C16:1n9 7.68

C16:2 0.830

C17:0 7.02 ± 0.37 7.17 4.17 6.60 6.97 4.67 0.723

C17:1 1.41

C18:1n7t 879

C18:1n9t 949

C18:1n12 736

C18:1n12t 2.79 1094

9c,11t-C18:2n6 3.45

C18:4n3 1.12 0.714

C19:0 0.658 0.606

C20:3n3 1.09 0.464

C20:3n9 2.26 ± 0.03 2.84 1.97 6.71

C20:4n3 1.18

C21:0 0.723 0.451 2.73

C22:2n6 0.303 ± 0.003 1.11

C23:0 7.75 ± 0.07 4.67 1.54 8.33 7.32

C26:0 0.262

C26:1 0.170

PhA 0.438

PrA 0.072

density (g/mL) 1.02 NA 1.05 0.979 1.04 1.00 1.00 NA 1.03 NA 0.960 NA 1.01 1.04 NA

a Reported as μM

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
39

Table 13. Interlaboratory data received for SRM 2378-3 (μM)

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Lab 5

a

Lab 6

a

Lab 7 Lab 8 Lab 9 Lab 10 Lab 11 Lab 12a

Lab 13aLab 14b

Code Cert or Ref Value

C14:0 155 ± 4 155 152 174 188 120 127 NA 168 NA 142 119 139 261 239

C14:1n5 14 ± 8 14.5 NA 17.0 27.9 7.40 NA NA 12.4 NA 9.76 11.2 NA 17.7 8.95

C16:0 2557 ± 455 2359 1895 2652 2655 2278 2172 NA 2810 2335 2370 2096 2308 4764 3506

C16:1n7 184 ± 13 170 114 181 200 156 124 NA 205 195 156 147 156 333 326

C18:0 696 ± 75 664 725 877 813 739 926 NA 834 633 633 658 735 1509 1612

C18:1n7 116 ± 12 113 NA 231 163 117 84.5 NA 125 NA 101 210 109 281 3672

C18:1n9 2059 ± 240 1936 1534 2053 2055 1735 1471 NA 2360 1822 1670 1805 1807 4027 2383

C18:2n6 3328 ± 21 3241 1864 3055 3499 2922 2432 NA 3640 2823 2916 2701 3107 7113 2072

C18:3n3 62.4 ± 0.5 61.4 40.9 66.0 62.2 51.3 7.32 NA 61.6 135 58.5 59.5 52.3 135 107c

C18:3n6 53.6 ± 3.6 49.9 NA 67.0 53.6 44.2 15.3 NA 60.5 NA 45.1 47.0 45.8 111 NA

C20:0 26.0 ± 9.0 24.8 NA 28.0 17.3 15.7 27.1 NA 6.88 NA 20.0 19.8 NA 17.8 39.0

C20:1n9 19.4 ± 1.4 17.5 24.2 NA 16.3 13.9 33.6 NA 14.5 NA 13.2 NA NA 34.4 37.9

C20:2n6 NA NA NA 19.3 16.4 8.10 NA 18.3 NA 16.3 NA NA 61.7 37.3

C20:3n6 NA 109 118 123 112 NA NA 122 NA 108 123 112 267 328

C20:4n6 765 ± 46 745 591 631 774 657 563 1443 1040 670 731 678 713 1625 1997

C20:5n3 63.8 ± 7.6 64.2 96.2 60.0 62.0 52.5 29.3 65.6 66.6 86.9 59.2 69.7 55.8 133 326

C22:0 58 ± 14 55.7 NA 67.0 38.0 41.2 103 NA 4.9 NA 61.9 47.7 44.6 20.2 232

C22:1n9 6 ± 4 5.23 NA 6.00 5.45 3.05 <LOQ NA NA NA NA 0.850 NA 21.9 37.6

C22:4n6 NA 38.5 18.0 18.7 15.5 <LOQ NA 20.1 NA 17.6 28.0 15.7 38.1 107

C22:5n3 35.1 ± 1.9 36.5 49.0 32.0 36.0 28.4 9.37 NA 32.3 198 33.8 48.7 33.7 91.1 83.6

C22:5n6 NA NA 17.0 16.8 12.5 <LOQ NA 17.1 NA 15.0 18.6 NA 32.9 185

C22:6n3 171 ± 8 166 171 139 170 134 114 250 185 NA 175 156 150 353 708

C24:0 50 ± 16 45.7 NA 54.3 31.2 35.6 23.7 NA 3.78 NA 53.4 46.8 38.5 5.80 309

C24:1n9 61 ± 25 53.4 NA 61.0 47.5 35.6 21.0 NA <LOD NA 63.2 62.7 38.7 5.62 289

List any additional information such as known coelutions or results for additional fatty acids below:

Lab 1

a

Lab 2

a

Lab 3 Lab 4

a

Lab 5

a

Lab 6

a

Lab 7 Lab 8 Lab 9 Lab 10 Lab 11 Lab 12a

Lab 13aLab 14b

Code Cert or Ref Value

C6:0 0.551

C8:0 5.25 1.31

C10:0 5.3 ± 0.9 8.90 4.72 7.84 4.52

C10:1n1 5.03

C11:0 0.0277

C12:0 90.5 42.7 18.5 39.0 25.7 28.6 39.2

C12:1 1.81 4.08

C12:1n7 3.45

C13:0 0.295

C14:2 0.950

C15:0 20.7 ± 0.5 10.8 23.2 20.9 17.5 25.4

C16:1n7t 477

C16:1n9 30.2

C16:2 3.29

C17:0 26.5 ± 1.4 27.7 15.4 25.0 24.7 17.3 2.67

C17:1 5.26

C18:1n7t 3111

C18:1n9t 3358

C18:1n12 2604

C18:1n12t 9.87 3873

9c,11t-C18:2n6 12.6

C18:4n3 4.17 2.48

C19:0 2.26 2.03

C20:3n3 3.73 1.55

C20:3n9 7.54 ± 0.10 9.67 6.18 21.9

C20:4n3 3.97

C21:0 2.27 1.38 8.37

C22:2n6 0.92 ± 0.01 3.44

C23:0 22.3 ± 0.2 13.8 4.34 22.5 20.6

C26:0 0.660

C26:1 0.430

PhA 1.40

PrA 0.240

density (g/mL) 1.02 NA 1.05 0.979 1.04 1.00 1.00 NA 1.03 NA 0.960 NA 1.01 1.04 NA

a Reported as μg/g

bReported in mg/mL

c

alpha and gamma linolenic acid probably coeluting
40

Table 14. Percent differences frommedian values by laboratory

Lab 1

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 22.3% -4.38% 11.1% -0.05% 5.06% 0.93% 2.99%

C14:1n5 27.7% -29.3% -4.44% 7.31% -6.03% 17.2% 1.43%

C16:0 0.00% -9.84% 12.6% 12.0% -6.49% 0.00% 0.00%

C16:1n7 0.00% -18.5% 11.7% 0.00% 11.0% 0.00% 0.00%

C18:0 -12.0% -16.8% -1.46% 0.00% -14.8% -10.0% -11.0%

C18:1n7 -3.86% -12.25% 8.24% -11.44% -16.2% -9.63% -10.5%

C18:1n9 -5.81% -24.34% 3.22% 3.69% 0.00% 6.30% 1.61%

C18:2n6 -3.81% -5.85% 3.02% 23.4% 8.26% 10.9% 5.64%

C18:3n3 10.1% -10.50% -1.40% 6.72% 4.74% 1.56% 3.15%

C18:3n6 -1.76% -22.26% -2.96% 6.89% 3.60% 2.96% 0.60%

C20:0 -17.2% -30.1% -22.0% -1.94% -3.59% 24.4% -10.4%

C20:1n9 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00%

C20:2n6

C20:3n6

C20:4n6 -1.83% -12.77% 4.30% 1.32% -5.69% 3.26% -0.25%

C20:5n3 -9.50% -10.83% 14.20% 2.19% -10.09% -1.11% -5.31%

C22:0 -28.1% -17.6% -20.6% 0.00% 1.99% 16.8% -8.81%

C22:1n9 0.00% 0.00% -16.5% -0.94% -30.2% -4.06% -2.50%

C22:4n6

C22:5n3 12.2% -6.38% 9.75% -1.34% -1.42% 1.14% -0.10%

C22:5n6

C22:6n3 5.40% 0.00% 14.42% 7.90% 2.44% -2.26% 3.92%

C24:0 -16.0% -36.7% -21.0% 0.00% 9.04% 18.9% -8.01%

C24:1n9 -4.33% -6.31% -7.01% 25.0% -3.23% 5.84% -3.78%

median for a sample -1.79% -11.5% 1.51% 0.66% -0.71% 1.35%
41

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 2

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 23.8% 7.36% -19.3% -4.63% -15.1% -0.93% -2.78%

C14:1n5

C16:0 -22.6% -24.4% -30.5% -25.0% -36.5% -19.7% -24.7%

C16:1n7 -37.2% -41.5% -39.0% -35.9% -43.2% -32.8% -38.1%

C18:0 -8.78% -8.74% -20.4% -10.4% -27.1% -1.81% -9.60%

C18:1n7

C18:1n9 -23.4% -32.2% -31.1% -25.1% -35.3% -15.8% -28.1%

C18:2n6 -46.0% -45.6% -48.7% -39.1% -51.3% -36.2% -45.8%

C18:3n3 -36.0% -42.6% -45.8% -33.9% -42.7% -32.3% -39.3%

C18:3n6

C20:0

C20:1n9 17.2% 57.2% 0.98% 34.3% 20.2% 37.9% 27.3%

C20:2n6

C20:3n6 -19.2% -16.2% -17.75% -12.0% -25.4% -9.5% -17.0%

C20:4n6 -29.0% -26.1% -32.03% -23.4% -32.8% -18.1% -27.5%

C20:5n3 142% 0.90% 25.88% -15.0% 17.8% 48.3% 21.8%

C22:0

C22:1n9

C22:4n6 83.2% 65.1% 55.0% 119% 49.1% 98.4% 74.2%

C22:5n3 44.7% 0.00% 5.21% 10.84% 3.16% 35.98% 8.03%

C22:5n6

C22:6n3 -3.95% -5.21% -17.1% -3.50% -15.4% 0.90% -4.58%

C24:0

C24:1n9

median for a sample -14.0% -12.5% -19.8% -13.5% -26.2% -5.64%
42

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 3

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 15.7% 20.6% 6.49% 11.0% 20.6% 13.5% 14.6%

C14:1n5 98.5% 63.0% 36.0% 32.3% 45.5% 37.1% 41.3%

C16:0 12.8% 12.9% 0.00% 6.01% 14.6% 12.4% 12.6%

C16:1n7 4.89% 31.9% 10.2% 5.68% 12.8% 6.77% 8.51%

C18:0 18.1% 19.5% 5.05% 10.24% 14.1% 18.7% 16.1%

C18:1n7 46.4% 112% 33.4% 44.4% 62.3% 84.8% 54.3%

C18:1n9 12.1% 70.1% 0.00% 8.11% 4.25% 12.7% 10.1%

C18:2n6 6.29% 56.8% -7.43% 4.29% -0.64% 4.55% 4.42%

C18:3n3 22.7% 92.6% 11.1% 3.18% 10.4% 9.23% 10.8%

C18:3n6 47.8% 156% 36.8% 32.4% 33.6% 38.2% 37.5%

C20:0 70.6% 71.1% 50.1% 31.3% 40.8% 40.7% 45.5%

C20:1n9

C20:2n6

C20:3n6 2.46% 82.6% -2.99% 2.00% -1.80% -1.67% 0.17%

C20:4n6 -6.89% 66.2% -16.5% -10.3% -5.29% -12.6% -8.61%

C20:5n3 1.13% 91.8% -5.27% 1.36% -6.20% -7.52% -2.07%

C22:0 60.7% 57.9% 42.7% 29.5% 18.8% 40.4% 41.6%

C22:1n9 81.6% 245% 45.0% 26.9% 12.5% 10.1% 35.9%

C22:4n6 -0.17% 53.9% 0.00% -11.6% 0.00% -7.23% -0.08%

C22:5n3 0.00% 65.5% -1.50% 0.73% -5.27% -11.2% -0.75%

C22:5n6 4.81% 93.7% 17.9% 2.15% 15.9% -0.29% 10.3%

C22:6n3 -3.75% 75.8% -10.9% -6.02% -11.8% -18.0% -8.48%

C24:0 54.7% 49.7% 48.7% 43.3% 45.5% 41.2% 47.1%

C24:1n9 51.6% 93.5% 27.9% 18.1% 18.9% 20.9% 24.4%

median for a sample 14.2% 68.2% 8.36% 7.06% 13.4% 11.3%
43

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 4

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 21.4% 20.4% 19.2% 24.2% 43.1% 22.8% 22.1%

C14:1n5 11.0% 0.00% 10.2% 0.00% 23.8% 125% 10.6%

C16:0 10.7% 7.76% 5.13% 12.8% 17.7% 12.5% 11.6%

C16:1n7 12.8% 16.2% 20.0% 17.5% 22.9% 17.8% 17.7%

C18:0 6.20% 4.98% 0.00% 7.60% 4.07% 10.1% 5.59%

C18:1n7 3.86% 7.46% 1.69% 12.3% 19.4% 30.3% 9.88%

C18:1n9 5.55% 3.94% 1.04% 9.27% 8.88% 12.8% 7.22%

C18:2n6 12.4% 7.81% 8.10% 19.6% 18.4% 19.8% 15.4%

C18:3n3 -2.71% -0.98% 2.01% -1.54% 4.21% 2.88% 0.52%

C18:3n6 6.36% 2.36% 5.99% 3.48% 4.60% 10.5% 5.29%

C20:0 -14.3% -9.73% -11.5% -27.7% -19.3% -12.9% -13.6%

C20:1n9 -24.5% -9.54% -28.9% -9.58% -11.0% -7.18% -10.3%

C20:2n6 0.00% 0.00% 0.00% 0.00% 0.00% 5.23% 0.00%

C20:3n6 -2.46% -1.31% 5.66% 2.18% 7.01% 2.40% 2.29%

C20:4n6 2.15% -0.77% 1.15% 6.18% 14.9% 7.19% 4.16%

C20:5n3 -9.98% -0.90% -4.52% 3.08% 6.48% -4.43% -2.67%

C22:0 -19.3% -19.5% -18.2% -30.3% -31.2% -20.3% -19.9%

C22:1n9 9.14% 45.9% 0.00% 0.00% 0.00% 0.00% 0.00%

C22:4n6 -11.8% -28.5% -8.69% -14.3% -13.4% -3.59% -12.6%

C22:5n3 -1.25% -10.2% 0.00% 3.76% 0.00% 0.00% 0.00%

C22:5n6 -5.72% -8.49% -5.13% -2.36% -8.91% -1.65% -5.43%

C22:6n3 0.00% -0.64% 0.00% 5.19% 2.80% 0.00% 0.00%

C24:0 -20.9% -32.4% -23.2% -25.2% -17.1% -18.8% -22.1%

C24:1n9 0.42% 6.31% 7.01% -27.7% 3.23% -5.84% 1.82%

median for a sample 0.21% -0.32% 0.52% 2.63% 4.14% 2.64%
44

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 5

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 -31.9% -23.7% -18.4% -12.5% -10.8% -21.9% -20.2%

C14:1n5 -49.2% -45.4% -28.5% -26.2% -30.5% -40.3% -35.4%

C16:0 -5.76% -6.23% -10.11% -5.07% -0.06% -3.46% -5.41%

C16:1n7 -17.8% -7.66% -6.58% -5.27% -1.89% -8.11% -7.12%

C18:0 -4.53% -3.81% -10.52% -5.98% -5.09% 0.00% -4.81%

C18:1n7 -25.9% -20.1% -33.7% -14.1% -9.18% -6.43% -17.1%

C18:1n9 -11.8% -11.6% -13.5% -6.89% -6.56% -4.77% -9.22%

C18:2n6 -7.20% -9.03% -8.45% 0.00% 0.00% 0.00% -3.60%

C18:3n3 -20.3% -15.9% -13.1% -17.1% -9.10% -15.1% -15.5%

C18:3n6 -12.8% -14.0% -9.06% -13.6% -8.39% -8.78% -10.9%

C20:0 -14.2% -14.8% -18.0% -26.2% -23.7% -21.3% -19.6%

C20:1n9 -34.7% -33.6% -43.3% -26.2% -22.3% -20.4% -29.9%

C20:2n6 -9.14% -11.5% -10.7% -13.5% -9.63% -10.4% -10.6%

C20:3n6 -10.5% -8.82% -1.59% -3.60% 0.71% -6.68% -5.14%

C20:4n6 -14.5% -14.8% -12.9% -9.23% -1.40% -9.05% -11.0%

C20:5n3 -25.2% -16.3% -16.7% -12.1% -18.1% -19.1% -17.4%

C22:0 -5.90% -8.08% -14.7% -22.15% -27.3% -13.6% -14.2%

C22:1n9 -22.8% -7.56% -34.9% -31.1% -47.9% -44.1% -33.0%

C22:4n6 -25.8% -39.54% -22.4% -26.9% -23.3% -20.4% -24.5%

C22:5n3 -23.0% -26.20% -16.1% -16.1% -20.6% -21.3% -21.0%

C22:5n6 -30.8% -30.53% -18.5% -25.4% -24.3% -26.5% -25.9%

C22:6n3 -21.9% -20.02% -17.3% -15.6% -18.6% -21.2% -19.3%

C24:0 0.00% 0.00% 0.00% -3.46% 0.00% -7.49% 0.00%

C24:1n9 -10.6% -17.6% -18.7% -28.9% -30.6% -29.4% -23.8%

median for a sample -16.2% -14.8% -15.4% -13.8% -10.2% -14.4%
45

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 6

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 -27.1% -16.2% -22.1% -18.4% -10.6% -17.2% -17.8%

C14:1n5

C16:0 -10.7% -5.79% -15.7% -11.8% -2.58% -7.94% -9.34%

C16:1n7 -38.6% -22.1% -21.8% -24.9% -18.9% -26.7% -23.5%

C18:0 16.3% 27.8% 2.94% 19.2% 19.2% 25.4% 19.2%

C18:1n7 -44.8% -38.7% -48.3% -38.3% -27.9% -32.4% -38.5%

C18:1n9 -25.8% -19.9% -25.0% -21.9% -16.5% -19.2% -20.9%

C18:2n6 -22.6% -18.8% -22.0% -16.1% -11.6% -16.8% -17.8%

C18:3n3 -88.7% -93.9% -90.3% -93.0% -92.7% -87.9% -91.5%

C18:3n6 -91.5% -55.1% -85.9% -53.5% -68.5% -68.5%

C20:0 51.4% 59.4% 14.1% 20.0% 18.8% 36.1% 28.0%

C20:1n9 9.47% 187% 116% 263% 290% 91.9% 152%

C20:2n6 -49.7% -47.0% -44.6% -58.4% -49.6% -55.7% -49.7%

C20:3n6

C20:4n6 -26.4% -21.3% -24.8% -21.3% -11.0% -22.0% -21.7%

C20:5n3 -88.4% -39.4% -51.7% -35.8% -50.4% -54.9% -51.0%

C22:0 121% 252% 194% 80.5% 118% 117% 119%

C22:1n9

C22:4n6 -97.9% -99.2% -98.5%

C22:5n3 -94.5% -60.8% -62.0% -54.8% -64.4% -74.0% -63.2%

C22:5n6 -99.2% -99.2%

C22:6n3 -32.9% -24.0% -27.0% -25.4% -26.3% -32.6% -26.7%

C24:0 -57.9% -56.5% -47.3% -36.1% -28.4% -38.3% -42.8%

C24:1n9 -57.4% -60.8% -61.7% -56.6% -55.0% -58.4% -57.9%

median for a sample -30.0% -22.1% -27.0% -24.9% -22.6% -26.7%
46

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 7

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0

C14:1n5

C16:0

C16:1n7

C18:0

C18:1n7

C18:1n9

C18:2n6

C18:3n3

C18:3n6

C20:0

C20:1n9

C20:2n6

C20:3n6

C20:4n6 32.0% 47.2% 23.6% 28.1% 112.1% 99.9% 39.6%

C20:5n3 25.8% 12.7% 4.52% -5.67% -0.17% 1.11% 2.81%

C22:0

C22:1n9

C22:4n6

C22:5n3

C22:5n6

C22:6n3 35.8% 72.2% 23.9% 0.00% 42.3% 47.5% 39.0%

C24:0

C24:1n9

median for a sample 32.0% 47.2% 23.6% 0.00% 42.3% 47.5%
47

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 8

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 -11.1% 4.38% 4.03% 24.5% 17.0% 9.54% 6.96%

C14:1n5 -7.11% -2.58% -0.18% 5.11% 0.00% 0.00% -0.09%

C16:0 18.7% 21.5% 12.0% 29.2% 27.7% 19.1% 20.3%

C16:1n7 9.47% 28.9% 14.8% 35.1% 36.6% 20.9% 24.9%

C18:0 10.7% 16.1% 6.9% 19.7% 12.5% 12.9% 12.7%

C18:1n7 -16.2% -7.46% -28.7% 0.00% 0.00% 0.00% -3.73%

C18:1n9 23.2% 28.1% 14.4% 39.3% 32.6% 29.6% 28.8%

C18:2n6 19.4% 20.6% 9.16% 37.7% 29.3% 24.6% 22.6%

C18:3n3 1.16% 8.17% 1.00% 12.97% 16.0% 1.95% 5.06%

C18:3n6 21.0% 27.1% 19.3% 27.1% 36.3% 24.8% 26.0%

C20:0 -84.5% -79.4% -80.6% -65.4% -81.2% -65.4% -80.0%

C20:1n9 -32.1% -27.1% -46.4% -3.63% -21.4% -17.2% -24.2%

C20:2n6 13.3% 19.3% 7.31% 23.2% 13.1% 0.00% 13.2%

C20:3n6 6.88% 20.6% 27.1% 22.0% 24.0% 1.67% 21.3%

C20:4n6 39.9% 43.3% 38.3% 58.1% 65.6% 44.1% 43.7%

C20:5n3 -1.13% 23.3% 12.0% 35.4% 10.7% 2.65% 11.3%

C22:0 -97.2% -96.2% -96.8% -92.3% -97.1% -89.7% -96.5%

C22:1n9

C22:4n6 0.17% -9.93% 1.97% 11.6% 1.25% 3.59% 1.61%

C22:5n3 -2.95% 1.46% -7.89% -3.07% 0.98% -10.4% -3.01%

C22:5n6 -1.18% 3.65% 16.1% 11.3% 8.91% 0.29% 6.28%

C22:6n3 12.8% 27.6% 20.8% 36.1% 17.0% 9.13% 18.9%

C24:0 -97.1% -96.2% -95.6% -91.8% -95.4% -90.2% -95.5%

C24:1n9

median for a sample 0.67% 12.1% 7.08% 20.9% 12.8% 2.30%
48

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 9

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0

C14:1n5

C16:0 -0.19% 4.12% 12.38% 0.00% 0.00% -1.04% 0.00%

C16:1n7 -9.36% -39.5% -42.1% -2.26% -18.3% 14.8% -13.8%

C18:0 -0.72% -4.19% -3.75% -12.74% -6.41% -14.4% -5.30%

C18:1n7

C18:1n9 11.4% 13.1% 12.6% -7.01% 0.38% 0.00% 5.91%

C18:2n6 12.49% 5.95% 9.82% -3.45% 0.67% -3.40% 3.31%

C18:3n3 79.5% 34.4% -0.54% 19.9% 26.0% 123% 30.2%

C18:3n6

C20:0

C20:1n9

C20:2n6

C20:3n6

C20:4n6 3.16% 4.68% 0.00% -1.32% 4.47% -7.15% 1.58%

C20:5n3 105% -9.42% -16.0% -16.8% 47.0% 33.9% 12.2%

C22:0

C22:1n9

C22:4n6

C22:5n3 355% 157% 300% 286% 246% 449% 293%

C22:5n6

C22:6n3

C24:0

C24:1n9

median for a sample 11.4% 4.68% 0.00% -2.26% 0.67% 0.00%
49

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 10

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 -22.0% -11.4% -4.03% 0.05% -16.1% -7.19% -9.29%

C14:1n5 -32.6% -27.2% -14.8% -19.3% -33.1% -21.3% -24.3%

C16:0 0.48% 0.00% -0.97% 3.89% -6.16% 0.44% 0.22%

C16:1n7 -10.6% 0.00% 0.00% 2.46% -18.1% -7.87% -3.93%

C18:0 -20.1% -18.7% -22.8% -16.8% -20.5% -14.3% -19.4%

C18:1n7 -28.0% -25.3% -41.6% -17.5% -32.5% -19.6% -26.7%

C18:1n9 -6.57% -6.22% -7.41% 0.00% -23.9% -8.30% -6.99%

C18:2n6 2.13% 0.00% 0.26% 9.92% -16.5% -0.22% 0.13%

C18:3n3 -1.16% 0.98% 5.45% 1.54% -10.2% -3.24% -0.09%

C18:3n6 0.00% -2.36% 1.65% -3.48% -24.2% -6.93% -2.92%

C20:0 14.2% 9.73% 11.5% 1.94% 3.59% 0.40% 6.66%

C20:1n9 -34.3% -29.8% -42.6% -18.4% -33.8% -24.4% -31.8%

C20:2n6 -8.07% -15.2% -10.8% -11.7% -14.1% -11.0% -11.3%

C20:3n6 -11.95% -9.65% -2.29% -6.63% -5.61% -10.0% -8.14%

C20:4n6 -1.13% -1.60% 0.00% 5.43% -1.92% 1.26% -0.56%

C20:5n3 -13.8% -1.28% -5.69% 7.18% -21.83% -8.80% -7.24%

C22:0 42.7% 37.8% 33.3% 18.7% 12.3% 29.8% 31.6%

C22:1n9

C22:4n6 -14.1% -26.8% -8.75% -13.8% -7.81% -9.52% -11.7%

C22:5n3 -9.20% -9.99% -0.49% 0.00% -6.78% -6.12% -6.45%

C22:5n6 -19.49% -19.51% -7.86% -12.24% -13.47% -12.27% -12.9%

C22:6n3 2.32% 6.65% 8.12% 11.39% 0.00% 3.47% 5.06%

C24:0 45.3% 39.2% 45.9% 39.9% 42.2% 38.8% 41.0%

C24:1n9 65.8% 35.9% 35.1% 24.7% 24.1% 25.2% 30.1%

median for a sample -8.07% -2.36% -0.97% 0.05% -13.5% -7.19%
50

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 11

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 -24.5% -14.9% -15.6% -13.5% -10.4% -22.7% -15.2%

C14:1n5 50.0% 2.41% 0.00% -4.99% 5.91% -9.76% 1.20%

C16:0 -2.73% -2.76% -6.06% -4.47% -0.21% -11.2% -3.62%

C16:1n7 5.56% 7.08% -0.02% -3.85% -4.67% -13.2% -1.93%

C18:0 0.00% 0.00% 5.03% -3.96% 0.00% -11.0% 0.00%

C18:1n7 30.9% 20.2% 0.00% 8.08% 21.5% 67.6% 20.9%

C18:1n9 0.00% 0.00% -8.71% -3.71% -8.25% -0.93% -2.32%

C18:2n6 0.00% 4.47% -9.76% -8.27% -15.03% -7.56% -7.92%

C18:3n3 4.51% 4.27% 0.54% -7.80% -4.21% -1.56% -0.51%

C18:3n6 -0.81% 8.37% -6.55% -6.06% -11.8% -2.96% -4.51%

C20:0 29.0% 28.9% 15.7% 5.64% 10.0% -0.40% 12.9%

C20:1n9

C20:2n6

C20:3n6 3.07% 1.31% -0.51% -2.00% -10.5% 2.28% 0.40%

C20:4n6 1.13% 0.77% -6.95% -7.29% -3.30% -6.14% -4.72%

C20:5n3 8.14% 12.4% 7.57% -1.36% 0.17% 7.49% 7.53%

C22:0 28.3% 27.9% 17.6% 3.95% 0.00% 0.00% 10.8%

C22:1n9 -72.1% -61.8% -77.7% -83.9% -86.5% -84.4% -80.8%

C22:4n6 38.1% 9.93% 32.7% 16.3% 11.4% 44.2% 24.5%

C22:5n3 28.6% 13.7% 24.5% 14.5% 6.13% 35.2% 19.5%

C22:5n6 1.18% -3.65% 0.00% -2.15% -14.0% 9.27% -1.07%

C22:6n3 -0.07% -10.97% -17.9% -33.1% -26.7% -8.03% -14.5%

C24:0 52.5% 50.7% 47.1% 45.1% 39.5% 21.6% 46.1%

C24:1n9 61.3% 58.2% 25.3% 22.9% 5.56% 24.3% 24.8%

median for a sample 3.79% 4.37% 0.00% -3.78% -1.76% -1.25%
51

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 12

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 -28.7% -19.3% -8.31% -13.1% -5.06% -9.04% -11.0%

C14:1n5

C16:0 -0.30% -4.39% -2.41% -6.03% 3.21% -2.16% -2.28%

C16:1n7 -17.9% -8.94% -2.36% -12.6% 0.00% -7.96% -8.45%

C18:0 -7.52% -7.24% -6.96% -14.6% -4.45% -0.51% -7.10%

C18:1n7 -37.8% -24.9% -18.4% -12.9% -21.6%

C18:1n9 -10.0% -8.29% -5.51% -10.7% -3.79% -0.79% -6.90%

C18:2n6 -0.63% -4.77% 0.00% -1.90% 4.10% 6.32% -0.32%

C18:3n3 -15.1% -11.6% -6.11% -21.0% -7.59% -13.4% -12.5%

C18:3n6 -4.61% -7.37% -1.65% -19.5% -3.60% -5.45% -5.03%

C20:0

C20:1n9

C20:2n6

C20:3n6 -10.2% -8.15% 0.51% -13.7% -0.71% -6.83% -7.49%

C20:4n6 -13.3% -10.7% -2.27% -18.9% 1.40% -1.26% -6.47%

C20:5n3 -19.8% -7.08% -7.24% -15.0% -14.1% -14.0% -14.0%

C22:0 0.00% 0.00% 0.00% -7.82% -22.1% -6.61% -3.30%

C22:1n9

C22:4n6 -19.7% -25.6% -13.6% -28.0% -15.6% -19.0% -19.4%

C22:5n3 -15.4% -14.4% -3.38% -15.7% -12.5% -6.37% -13.4%

C22:5n6

C22:6n3 -10.4% -5.83% -4.41% -14.0% -10.4% -11.23% -10.4%

C24:0 2.28% 4.21% 11.39% 6.57% -4.71% 0.00% 3.24%

C24:1n9 -0.42% -10.3% -13.8% -18.1% -24.2% -23.4% -16.0%

median for a sample -10.2% -8.15% -3.90% -14.3% -4.89% -6.72%
52

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 13

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 11.1% 31.8% 61.1% 72.0% 74.5% 70.1% 65.6%

C14:1n5 -3.27% 16.1% 51.0% 44.3% 44.3% 42.9% 43.6%

C16:0 53.1% 55.9% 81.4% 94.2% 102% 102% 87.8%

C16:1n7 38.8% 60.0% 90.9% 92.6% 101% 96.2% 91.7%

C18:0 50.1% 47.1% 76.0% 90.6% 87.0% 104% 81.5%

C18:1n7 39.3% 49.9% 51.7% 101% 105% 125% 76.6%

C18:1n9 56.2% 57.4% 94.4% 110% 108% 121% 101%

C18:2n6 70.6% 74.5% 113.2% 140% 134% 143% 124%

C18:3n3 71.1% 79.7% 119.9% 120% 129% 123% 120%

C18:3n6 68.4% 76.2% 116.3% 118% 122% 129% 117%

C20:0 -57.4% -60.7% -41.2% -20.7% -52.8% -10.4% -47.0%

C20:1n9 25.7% 34.7% 39.8% 97.9% 82.6% 96.2% 61.2%

C20:2n6 132% 137% 180% 203% 208% 237% 191%

C20:3n6 61.5% 69.9% 125% 128% 133% 122% 124%

C20:4n6 62.2% 68.5% 106% 124% 136% 125% 115%

C20:5n3 47.1% 73.9% 102% 124% 100% 105% 101%

C22:0 -74.2% -83.2% -78.7% -63.4% -84.3% -57.7% -76.5%

C22:1n9 -3.2% -31.9% 369% 336% 224% 303% 263%

C22:4n6 46.7% 26.4% 88.4% 89.4% 94.5% 96.3% 88.9%

C22:5n3 54.6% 50.7% 121% 144% 129% 153% 125%

C22:5n6 34.4% 37.9% 100% 102% 96.1% 93.0% 94.5%

C22:6n3 58.2% 67.4% 109% 126% 111% 108% 109%

C24:0 -77.7% -80.3% -76.4% -76.2% -84.9% -84.9% -79.0%

C24:1n9 -90.6% -89.5% -88.1% -85.3% -91.6% -88.9% -89.2%

median for a sample 46.9% 50.3% 92.7% 102% 101% 104%
53

Table 14 (cont). Percent differences frommedian values by laboratory

Lab 14

Code Unk 01 Unk 02 Unk 03 SRM 2378-1 SRM 2378-2 SRM 2378-3 median across samples

C14:0 68.0% 192% 115% 103% 102% 56.0% 103%

C14:1n5 0.00% 37.7% 30.9% -1.63% -12.9% -27.8% -0.82%

C16:0 76.4% 95.4% 41.3% -91.3% 53.2% 48.6% 50.9%

C16:1n7 162% 175% 197% 140% 146% 92.3% 154%

C18:0 179% 228% 147% 148% 159% 118% 153%

C18:1n7 2359% 2773% 2651% 2380% 2922% 2838% 2712%

C18:1n9 67.6% 78.8% 49.4% 45.1% 28.0% 30.8% 47.3%

C18:2n6 -7.88% -3.59% -1.47% -8.78% -15.4% -29.1% -8.33%

C18:3n3

C18:3n6

C20:0 182% 197% 139% 107% 139% 96.0% 139%

C20:1n9 116% 306% 190% 321% 318% 117% 248%

C20:2n6 169% 204% 169% 141% 145% 104% 157%

C20:3n6 257% 279% 240% 225% 231% 173% 235%

C20:4n6 219% 288% 235% 238% 237% 177% 236%

C20:5n3 1185% 388% 508% 370% 466% 403% 435%

C22:0 532% 584% 381% 395% 328% 387% 391%

C22:1n9 1831% 2986% 1618% 737% 1378% 589% 1498%

C22:4n6 557% 524% 533% 506% 503% 451% 515%

C22:5n3 198% 29% 153% -12% 80% 132% 106%

C22:5n6 1552% 3269% 1395% 4060% 1537% 985% 1544%

C22:6n3 528% 442% 409% 386% 367% 317% 397%

C24:0 939% 974% 751% 776% 697% 703% 764%

C24:1n9 678% 567% 475% 474% 424% 473% 475%

median for a sample 208% 284% 216% 231% 234% 152%
54

Appendix A.

Methods reported by the participating laboratories

Table A-1. Procedures used

Table A-2. Calibration information

Table A-3. Additional notes provided by laboratories
55

Mass of samples extracted (g) :

SRM 2378 level 1 ( red cap)

SRM 2378 level 2 ( blue cap)

SRM 2378 level 3 ( green cap)

0.62

0.86

0.77

0.1043

0.1040

0.1049

0.0487

0.0489

0.0489

Lagerstedt SA, Hinrichs DR, Batt SM,

Magera MJ, Rinaldo P, McConnell JP.

(2001) Quantitative determination of

plasma C8-C26 total fatty acids for the

biochemical diagnosis of nutritional

and metabolic disorders. Mol Genet

Metab,.73:38-45.

0.106

0.106

0.104

0.10

0.10

0.10

Sánchez-Ávila N, Mata-Granados JM,

Ruiz-Jiménez J, Luque de Castro MD, J

Analytical method reference, if available Chromatog A 1216 (2009) 6864-6872

Analytical method used:

0.4 M KOH methanol followed by 1 M

Hydrolysis method H2SO4 methanol Acid and Base Hydrolysis

Extraction method Liquid-liquid Liquid-liquid Extraction Liquid Liquid Extraction (LLE) Modified Folch Modified Folch

Extraction solvent hexane with 40 mg/g BHT

Extraction time vortex 30 s each time

Chloroform-Methanol (2:1)

2 min

Hexane

2 minutes

2:1 chloroform:methanol

One hour in 2:1 chloroform:methanol

Chloroform:Methanol (2:1)

20 min

Hexane extraction performed 2x

following base addition and 2x

Extraction - other details following acid addition

Addition of 500uL sodium phosphate

buffer, vortex, centrifuge, double

extraction of organic phase constant vortexing

Sample extract cleanup method none Hexane LLE fromderivatizing reagent

Derivitization reagent acidic methanol

METH-PREP II, Grace Davision

Discovery Sciences pentafluorobenzylbromide 14% BF3 in methanol 14% Boron Triflouride

Analytical instrument GC-FID Agilent 7890A GC, 5975C MSD

Non bonded, Poly (

80%biscyanopropyl/20%cyanopropyl

phenyl siloxane) phase

30

0.25

0.20

6890N/5973N Gas

Chromatograph/Mass Spectrometer Varian 3900 GC-FID GC- FID

crossbonded polyethylene glycol

Column phase (FAMEWAX, Restek)

Column length, m 30

Column i.d., mm 0.32

Column filmthickness, μm 0.25

5% phenyl-95% methylpolysiloxane

20m

0.18

180

DB-FFAP

15

0.10

0.10

SP-2560

100

0.25

0.20

Injection method (split, splitless, etc)

Method of quantitation:

split split split and splitless 100:1 Split ratio Split

Table A-1 Procedures used

Lab # 1 2 3 4 5

Reporting date 5/26/2015 5/1/2015 5/6/2015 06/01/2015 5/25/2015

Volume of sample extracted (mL): varied 0.10 0.05 0.100 0.10

Mass of samples extracted (g) (average of 3):

FAQAP unk01 (gold cap) 0.80 0.1040 0.0489 0.106 0.10

FAQAP unk02 (purple cap) 0.81 0.1044 0.0489 0.105 0.10

FAQAP unk03 (pink cap) 0.77 0.1053 0.0489 0.106 0.10

ES = external standards (Y/N) N Y Y

Number of ES used 0 28 7

IS = internal standards (Y/N) yes Y Y Y Y

Number of IS used 2 1 13 1 1

IS added PRIOR to extraction of sample yes Y Y Y Y
56

Table A-1Continued

Lab # 6 7 8 9 10

Reporting date 5/26/2015 reanalysis reported 07/29/2015 06/01/2015 6/1/2015 6/2/2015

Volume ofsample extracted (mL): 0.05 0.0031 0.05 0.04 0.10

Mass ofsamples extracted (g) (average of 3):

FAQAP unk01 (gold cap) 0.05 0.0956

FAQAP unk02 (purple cap) 0.05 0.0966

FAQAP unk03 (pink cap) 0.05 0.0973

Mass ofsamples extracted (g) :

SRM 2378 level 1 ( red cap) 0.05 0.0952

SRM 2378 level 2 ( blue cap) 0.05 0.0954

SRM 2378 level 3 ( green cap) 0.05 0.0960

Lagertedt S, Hinrichs D, Batt S, Magera

M, Rinaldo P, McConnell J.

Quantitative Determination of Plasma

C8-C26Total Fatty Acids for the

Analytical method reference, if

available:

Analytical method used:

in house method (with saponification,

lipid extraction and derivatization

performed in one-step method)

Bagga D, Capone S, Wang HJ, Heber

D, Lill M, Chap L, Glasphy JA. J Nat

Cancer Ins 1997; 89:1123-1131.

Add sample to 1mlmethanol:benzene

0.5M dry methanolic sodiummethoxide (4:1). Add 100 ul acetyl chloride. Heat

Biochemical Diagnosis of Nutritional

and Metabolic Disorders. Mol Genet &

Metab 2001; 73: 38-45.

Hydrolysis method KOH (Hydroxide Potassium) (as part of derivatization)

Liquid/Liquid (Smedes. 1999. Analyst.

for 60minutes at 100C. Acid/Base

Extraction method Liquid-liquid extraction Liquid extraction

Extraction solvent n-Heptane 0.001% BHT in Methanol

124, 1711-18) Liquid-liquid

1.5mL8:10:11 (v/v/v) 2-

propanol:cyclohexane:0.1M ammonium

acetate hexane

Extraction time 1 min Shake at 300 rpmfor 15min 6 min 20-30min per extraction

Cool sample to roomT and add 4 ml of

Transfer upper phase, 2nd extract with potassium carbonate (6%). Centerifuge triple extraction via automated liquid

Extraction - other details Re-extraction Follow by 90% Acetonitrile 0.57mLcyclohexane

Evaporate to dryness and reconstitute

and inject supernatant into GC. handler

Sample extract cleanup method - in 1:1 methanol/toluene Speedvac

Derivitization reagent BF3 methanolic solution

0.5M anhydrous MeO-Na+(1hr

@60oC) / 3N MeOH-HCl (30min @60oC) PFBBr - pentafluorobenzyl bromide

Analytical instrument GC-FID Bruker SCION 436-GC LC-MS/MS

Agilent 6890 Plus+ GC, 5973N MSD,

7683 Injector. MSD operated in

SIM/Scan mode. Quantification on SIM

signal.

Agilent Technologies 5890A gas

chromatograph GC/MS

Column phase

high polarity cyanopropyl stationary

phase (CP-Sil 88, Agilent J&W) C18

DB-225ms (i.e. 50%-

Cyanopropylphenyldimethylpolysiloxane)SP2380 stabilized phase fused silica

capillary column (Sigma-Aldrich)

90% biscyanopropyl/10%

phenylcyanopropyl polysiloxane

Column length, m 50 0.005 30 30 60

Column i.d., mm 0.25 2.1 0.25 0.32 0.25

Column filmthickness, μm 0.20 3 0.25 0.20 0.20

Injection method (split, splitless, etc) split (1:25) splitless split injection split

Method of quantitation:

ES = externalstandards (Y/N) Y N N

Number of ES used 1 mixwith 37 FAME 0

IS = internal standards (Y/N) Y Y Y C17:0 Y

Number of IS used 1 1 1 1 

17

IS added PRIORto extraction ofsample

(Y/N) Y Y Y Y
57

Mass ofsamples extracted (g) :

SRM 2378 level 1 ( red cap)

SRM 2378 level 2 ( blue cap)

SRM 2378 level 3 ( green cap)

0.20

0.20

0.20

0.259

0.260

0.260

Analytical method reference, if available

Analytical method used:

Lagerstedt SA, Hinrichs DR, Batt SM,

Magera MJ, Rinaldo P, McConnell JP.

Quantitative determination of plasma

C8-C26 total fatty acids for the

biochemical diagnosis of nutritional

and metabolic disorders. Mol Genet

Metab 2001;73:38-45

Lepage G,Roy C (1986) Direct

transesterification of all classes of

lipids in a one-step reaction. J Lip Res

27:114-120

Hydrolysis method

Acid hydrolysis followed by basic

hydrolysis and re-acidification Acetic acid with Methanol Alkaline 0.5M KOHin methanol Not applicable

Extraction method liquid-liquid Liquid/Liquid Extraction Centrifugation Direct transesterification (Lepage

Extraction solvent Hexane

Extraction time 20 min on rotary mixer

Hexane

14 per batch; each batch about 8 h for

extraction

Hexane

1 min 2h

Extraction - other details

Extraction solvent evaporated, samples

derivatized then reconstituted in

hexane + 0.5N HCl

Centrifugation ofsamples and removal

of supernatant for injection

x3

Sample extract cleanup method None na centrifugation

Derivitization reagent

2,3,4,5,6-Pentaflourobenzyl bromide

(10% solution in acetonitrile) Methyl ester is formed fromthe methano Boron Trifluoride in Methanol 14% acetyl chloride

Agilent 6890 GC/5975CCI MSD in

Analytical instrument negative ion mode Agilent MSD 5973N, Agilent GC6890N Agilent 6890 Plus

Column phase

Column length, m

Column i.d., mm

Column filmthickness, μm

DB-5MS

30m+ 10mguard

0.25

0.25

DB-23

60

0.25

0.15

50% cyanopropyl-methylpolysiloxane

60

0.25

0.15

Injection method (split, splitless, etc)

Method of quantitation:

Split and splitless injections for

different fatty acids Split split

Thermo Scientific Trace Ultra Gas

chromatograph coupled to an ISQ mass

spectrometer with a programmable

temperature vaporising (PTV) injector

higly polar stationary phase (90%

biscyanopropyl 10%

cyanopropylphenyl polysiloxane,

Shimadzu)

100m

0.25mm

0.2 um

The inlet temperature was 250°C, in

splitless mode, the column flow was set

at 1 mL/min, with a column head

pressure of 9 psi, giving an average

linear velocity of 19 cm/sec. Purge flow

was set to 50mL/min 1 min after

injection.

Table A-1 Continued

Lab # 11 12 13 14

Reporting date 6/4/2015 6/5/2015 06/08/15 07/24/15

Volume ofsample extracted (mL): 0.10 0.20 0.250 0.20

Mass ofsamples extracted (g) (average of 3):

FAQAP unk01 (gold cap) 0.20 0.261

FAQAP unk02 (purple cap) 0.20 0.260

FAQAP unk03 (pink cap) 0.20 0.261

ES = externalstandards (Y/N) Y N Y none

Number of ES used 37 compounds at 6 levels each 30 none

IS = internal standards (Y/N) Y Y Y Y

Number of IS used 13 in one solution 4 2 2

IS added PRIORto extraction ofsample Y Y Y Y
58

Table A-2 Calibration information

Lab Fatty Acid

Code

Fatty Acid Name Lowest std

(μmol/L)

Highest std

(μmol/L)

LOD

(μmol/L)

LOQ

(μmol/L)

Curve Type Weighting IS used for quantitation

1 C14:0 Myristic acid used response factors based on three independently prepared calibration solutoins Myristic-d27

C14:1n5 Myristoleic acid used response factors based on three independently prepared calibration solutoins Myristic-d27

C16:0 Palmitic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C16:1n7 Palmitoleic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C18:0 Stearic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C18:1n7 cis- Vaccenic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C18:1n9 Oleic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C18:2n6 Linoleic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C18:3n3 alpha- Linolenic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C18:3n6 gamma- Linolenic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C20:0 Arachidic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C20:1n9 11-Eicosenoic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C20:4n6 Arachidonic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C20:5n3 Eicosapentaenoic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C22:0 Docosanoic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C22:1n9 Docosenoic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C22:5n3 Docosapentaenoic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C22:6n3 Docosahexaenoic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C24:0 Lignoceric acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

C24:1n9 Nervonic acid used response factors based on three independently prepared calibration solutoins Palmitic-d31

2 No information provided

3 C14:0 Myristic acid 12.5 150 0.3 3000 Linear None Myristic acid-d3

C14:1n5 Myristoleic acid 1.25 15 0.013 300 Linear None Pentadecanoic acid-d4

C16:0 Palmitic acid 25 300 2.81 6000 Linear None Palmitic-d3

C16:1n7 Palmitoleic acid 12.5 150 0.045 3000 Linear None Myristic acid-d3

C18:0 Stearic acid 25 300 3.719 6000 Linear None Stearic acid-d3

C18:1n7 cis-Vaccenic acid 25 300 0.089 6000 Linear None Stearic acid-d4

C18:1n9 Oleic acid 25 300 0.21 6000 Linear None Stearic acid-d5

C18:2n6 Linoleic acid 25 300 0.15 6000 Linear None Stearic acid-d6

C18:3n3 alpha-Linolenic acid 12.5 150 0.009 3000 Linear None Arachidic acid-d3

C18:3n6 gamma-Linolenic acid 12.5 150 0.009 3000 Linear None Arachidic acid-d3

C20:0 Arachidic acid 12.5 150 0.25 3000 Linear None Arachidic acid-d3

C20:3n6 homo-gamma-Linolenic acid 0.625 7.5 0.004 150 Linear None Docosanoic acid-d4

C20:4n6 Arachidonic acid 12.5 150 0.021 3000 Linear None Arachidic acid-d3

C20:5n3 Eicosapentaenoic acid 12.5 150 0.019 3000 Linear None Arachidic acid-d3

C22:0 Docosanoic acid 0.625 7.5 0.036 150 Linear None Docosanoic acid-d4

C22:4n6 Docosatetraenoic acid 0.625 7.5 0.002 150 Linear None Docosanoic acid-d4

C22:5n3 Docosapentaenoic acid 0.625 7.5 0.021 150 Linear None Docosanoic acid-d4

C22:5n6 Docosapentaenoic acid 0.625 7.5 0.021 150 Linear None Docosanoic acid-d4

C22:6n3 Docosahexaenoic acid 12.5 150 0.03 3000 Linear None Arachidic acid-d3

C24:0 Lignoceric acid 0.625 7.5 0.029 150 Linear None Tetracosanoic acid-d4

C24:1n9 Nervonic acid 0.625 7.5 0.004 150 Linear None Tetracosanoic acid-d4

4 C 10:0 Capric acid 5.434 3769.330 0.811 8.111 Linear Equal weight% Methyl-nonadecanoate

C 12:0 Lauric acid 4.723 3276.041 0.705 7.050 Linear Equal weight% Methyl-nonadecanoate

C 14:0 Myristic acid 4.177 2896.923 0.623 6.234 Linear Equal weight% Methyl-nonadecanoate

C 16:0 Palmitic acid 3.743 2596.450 0.559 5.587 Linear Equal weight% Methyl-nonadecanoate

C 18:0 Stearic Acid 3.392 2352.451 0.506 5.062 Linear Equal weight% Methyl-nonadecanoate

C 20:0 Arachidic acid 3.100 2150.371 0.463 4.627 Linear Equal weight% Methyl-nonadecanoate

C 22:0 Docosanoic acid 2.855 1980.263 0.426 4.261 Linear Equal weight% Methyl-nonadecanoate

C 24:0 Lignoceric acid 2.646 1835.096 0.395 3.949 Linear Equal weight% Methyl-nonadecanoate

C 12:1 Dodecenoic acid 4.768 3307.163 0.712 7.117 Linear Equal weight% Methyl-nonadecanoate

C 14:1 Myristoleic acid 4.212 2921.232 0.629 6.286 Linear Equal weight% Methyl-nonadecanoate

C 16:1 Palmitoleic acid 3.771 2615.961 0.563 5.629 Linear Equal weight% Methyl-nonadecanoate

C 18:1n-7 cis-Vaccenic acid 3.415 2368.456 0.510 5.097 Linear Equal weight% Methyl-nonadecanoate

C 18:1n-9 Oleic acid 3.415 2368.456 0.510 5.097 Linear Equal weight% Methyl-nonadecanoate

C 20:1n-9 11-Eicosenoic acid 3.119 2163.737 0.466 4.656 Linear Equal weight% Methyl-nonadecanoate

C 22:1n-9 Docosenoic acid 2.871 1991.592 0.429 4.286 Linear Equal weight% Methyl-nonadecanoate

C 24:1n-9 Nervonic acid 2.660 1844.821 0.397 3.970 Linear Equal weight% Methyl-nonadecanoate

C 18:2n-6 Linoleic acid 3.438 2384.679 0.513 5.132 Linear Equal weight% Methyl-nonadecanoate

C 18:3n-6 gamma-Linolenic acid 3.462 2401.127 0.517 5.167 Linear Equal weight% Methyl-nonadecanoate

C 20:2n-6 11,14-Eicosadienoic acid 3.139 2177.269 0.469 4.685 Linear Equal weight% Methyl-nonadecanoate

C 20:3n-6 hommo-gamma-Linolenic acid 3.159 2190.972 0.471 4.715 Linear Equal weight% Methyl-nonadecanoate

C 20:4n-6 Arachidonic acid 3.179 2204.848 0.474 4.745 Linear Equal weight% Methyl-nonadecanoate

C 22:2n-6 Docosadienoic acid 2.888 2003.051 0.431 4.310 Linear Equal weight% Methyl-nonadecanoate

C 22:4n-6 Docosatetraenoic acid 2.921 2026.370 0.436 4.361 Linear Equal weight% Methyl-nonadecanoate

C 18:3n-3 alpha-Linolenic acid 3.462 2401.127 0.517 5.167 Linear Equal weight% Methyl-nonadecanoate

C 20:3n-3 Eicosatrienoic acid 3.159 2190.972 0.471 4.715 Linear Equal weight% Methyl-nonadecanoate

C 20:5n-3 Eicosapentaenoic acid 3.199 2218.902 0.477 4.775 Linear Equal weight% Methyl-nonadecanoate

C 22:5n-3 Docosapentaenoic acid, n3 2.939 2038.234 0.439 4.386 Linear Equal weight% Methyl-nonadecanoate

C 22:6n-3 Docosahexaenoic acid 2.956 2050.238 0.441 4.412 Linear Equal weight% Methyl-nonadecanoate
59

Table A-2 (cont) Calibration information

Lab Fatty Acid

Code

Fatty Acid Name Loweststd

(μmol/L)

Higheststd

(μmol/L)

LOD

(μmol/L)

LOQ

(μmol/L) CurveType Weighting IS used for quantitation

5 No information provided

6 C12:0 Lauric acid 0.82 399 0.205 0.605 Linear 37FAMEmixfromSupelco

C14:0 Myristic acid 0.82 400 0.199 0.588 Linear 37FAMEmixfromSupelco

C15:0 Heptadecanoicacid 0.41 200 0.2 0.59 Linear 37FAMEmixfromSupelco

C16:0 Palmitic acid 1.24 602 0.193 0.57 Linear 37FAMEmixfromSupelco

C16:1 Palmitoleic acid 0.41 199 0.196 0.578 Linear 37FAMEmixfromSupelco

C17:0 Margaricacid 0.41 200 0.195 0.577 Linear 37FAMEmixfromSupelco

C17:1 10-Heptadecenoic acid 0.41 200 0.193 0.571 Linear 37FAMEmixfromSupelco

C18:0 Stearic acid 0.82 399 0.191 0.564 Linear 37FAMEmixfromSupelco

C18:1n9t Elaidic acid 0.41 200 0.2 0.592 Linear 37FAMEmixfromSupelco

C18:1n9c Oleic acid 0.82 399 0.189 0.559 Linear 37FAMEmixfromSupelco

C18:1n7 cis-Vaccenic acid 2.34 600 0.073 0.242 Linear 37FAMEmixfromSupelco

C19:0 (IS) Nonadecanoicacid 2.34 600 0.18 0.533 Linear C19:0FAME

C18:2n6c Linoleic acid 0.41 200 0.194 0.573 Linear 37FAMEmixfromSupelco

C20:0 Arachidic acid 0.83 402 0.176 0.521 Linear 37FAMEmixfromSupelco

C18:3n6 gamma-Linolenic acid 0.41 200 0.224 0.662 Linear 37FAMEmixfromSupelco

C20:1 11-Eicosenoicacid 0.41 199 0.195 0.575 Linear 37FAMEmixfromSupelco

C18:3n3 alpha-Linolenic acid 0.41 200 0.189 0.558 Linear 37FAMEmixfromSupelco

C20:2 11,14-Eicosadienoic acid 0.41 200 0.193 0.569 Linear 37FAMEmixfromSupelco

C22:0 Docosanoicacid 1.24 601 0.198 0.586 Linear 37FAMEmixfromSupelco

C20:4n6 Arachidonicacid 0.83 403 0.198 0.586 Linear 37FAMEmixfromSupelco

C23:0 Tricosanoicacid 0.41 200 0.19 0.563 Linear 37FAMEmixfromSupelco

C24:0 Lignocericacid 0.82 399 0.428 1.264 Linear 37FAMEmixfromSupelco

C20:5n3 Eicosapentaenoic acid 0.41 199 0.093 0.276 Linear 37FAMEmixfromSupelco

C24:1 Nervonic acid 0.41 200 0.19 0.561 Linear 37FAMEmixfromSupelco

C22:4n6 Docosatetraenoic acid 2.34 600 0.073 0.242 Linear 37FAMEmixfromSupelco

C22:5n3 Docosapentaenoic acid 2.34 600 0.073 0.242 Linear 37FAMEmixfromSupelco

C22:5n6 Docosapentaenoic acid 2.34 600 0.073 0.242 Linear 38FAMEmixfromSupelco

C22:6n3 Docosahexaenoic acid 0.41 201 0.199 0.588 Linear 37FAMEmixfromSupelco

7 C20:4n6 Arachidonicacid 317 2952 Linear 1/x Docosahexaenoic-d5

C20:5n3 Eicosapentaenoic acid 12.5 116 Linear 1/x Docosahexaenoic-d5

C22:6n3 Docosahexaenoic acid 38.1 354 Linear 1/x Docosahexaenoic-d5

8 C14:0 Myristic acid 0.0495 16.5 2.29 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C14:1n5 Myristoleic acid 0.00832 2.77 0.384 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C16:0 Palmitic acid 0.592 197 27.3 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C16:1n7 Palmitoleic acid 0.0248 7.45 1.15 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C18:0 Stearic acid 0.134 40.2 6.19 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C18:1n7 cis-Vaccenicacid 0.0295 9.85 1.36 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C18:1n9 Oleic acid 0.27 89.9 12.5 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C18:2n6 Linoleic acid 0.204 67.9 9.41 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C18:3n3 alpha-Linolenic acid 0.0362 10.9 1.67 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C18:3n6 gamma-Linolenic acid 0.0134 4.03 0.621 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C20:0 Arachidic acid 0.00613 2.04 0.283 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C20:1n9 11-Eicosenoicacid 0.0123 4.11 0.569 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C20:2n6 11,14-Eicosadienoic acid 0.00703 2.34 0.325 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C20:3n6 homo-gamma-Linolenic acid 0.0359 12.0 1.66 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C20:4n6 Arachidonicacid 0.344 115 15.9 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C20:5n3 Eicosapentaenoic acid 0.051 17.00 2.35 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C22:0 Behenic acid 0.00564 1.88 0.261 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C22:1n9 cis-Erucucacid 0.00753 2.51 0.348 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C22:4n6 Adrenic acid 0.027 2.7 1.25 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C22:5n3 Docosapentaenoic acid 0.0227 6.81 1.05 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C22:5n6 Osbond acid 0.026 2.60 1.20 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C22:6n3 Docosahexaenoic acid 0.0627 18.8 2.90 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C24:0 Lignocericacid 0.00523 1.74 0.242 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C24:1n9 Nervonic acid 0.00836 27.9 0.387 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C12:0 Lauric acid 0.0373 12.4 1.72 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C15:0 Pentadecanoicacid 0.00781 2.60 0.361 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C17:0 Margaricacid 0.0234 7.03 1.08 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C18:4n3 Stearidonic acid 0.00124 0.412 0.0571 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C19:0 Nonadecanoicacid 0.0064 2.13 0.296 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

9c,11t-C18:2n6 Rumenic acid 0.00735 2.45 0.339 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C20:3n3 11,14,17-Eicosatrienoic acid 0.0055 1.83 0.254 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C21:0 Heneicosanoicacid 0.00309 1.03 0.143 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

C20:4n3 Arachidonic acid (Omega 3) 0.00299 0.995 0.138 quadratic Equal Glyceryl Tri(hexadecanoate-d31)

Notes:

Concentrations for Loweststdand Higheststdare as measured at the instrument.

LODis defined as lowest standard concentration converted to calculated concentration in sample.

LOQwas not determined.

Highest sample concentrations were no more than 104% of the highest standard concentration.

Lowest sample concentrations were at least 70%above the lowest standard concentration.

Extraction surrogates for cholesterylesters, phosphatidylcholine, also used in extraction and showed equivalent recoveries as trigylceride.

Mass spectral detector operated in SIM/Scan mode. Quantification on SIM signals with minimumof 1 qualifier ion. All peak integrations subject to manualreview.
60

Table A-2 (cont) Calibration information

Lab Fatty Acid

Code

Fatty Acid Name Lowest std

(μmol/L)

Highest std

(μmol/L)

LOD

(μmol/L)

LOQ

(μmol/L)

Curve Type Weighting IS used for quantitation

9 C14:0 Myristic acid NA NA

C14:1n5 Myristoleic acid NA NA

C16:0 Palmitic acid 151.7 2428.3

C16:1n7 Palmitoleic acid 51.9 832.4

C18:0 Stearic acid 91.7 1467.9

C18:1n7 cis- Vaccenic acid NA NA

C18:1n9 Oleic acid 92.4 1479.0

C18:2n6 Linoleic acid 46.7 749.1

C18:3n3 alpha- Linolenic acid 47.0 750.5

C18:3n6 gamma- Linolenic acid NA NA

C20:0 Arachidic acid NA NA

C20:1n9 11-Eicosenoic acid NA NA

C20:2n6 11,14-Eicosadienoic acid NA NA

C20:3n6 homo-gamma- Linolenic acid NA NA

C20:4n6 Arachidonic acid 39.7 654.1

C20:5n3 Eicosapentaenoic acid 36.2 580.7

C22:0 Docosanoic acid NA NA

C22:1n9 Docosenoic acid NA NA

C22:4n6 Docosatetraenoic acid NA NA

C22:5n3 Docosapentaenoic acid 39.9 636.7

C22:5n6 Docosapentaenoic acid NA NA

C22:6n3 Docosahexaenoic acid NA NA

C24:0 Lignoceric acid NA NA

C24:1n9 Nervonic acid NA NA

10 C18:3n3 alpha- Linolenic acid 6.62 662 1.54 not available linear 1/x2

alpha -Linolenic-d14

C20:0 Arachidic acid 0.95 95.1 0.82 not available linear 1/x2Arachidic-d39

C20:4n6 Arachidonic acid 23.0 2300 7.34 not available linear 1/x2Arachidonic-d8

C10:0 Capric acid 0.51 45.7 1.59 not available quadratic 1/x2Capric-d3

C22:0 Docosanoic acid 1.94 194 0.68 not available linear 1/x2Docosanoic-d4

C22:6n3 Docosahexaenoic acid 8.06 806 1.84 not available linear 1/x2Docosahexaenoic-d5

C22:5n3 Docosapentaenoic n-3 acid 2.54 254 0.55 not available linear 1/x2Docosahexaenoic-d5

C22:5n6 Docosapentaenoic n-6 acid 1.50 150 0.24 not available linear 1/x2Docosahexaenoic-d5

C22:4n6 Docosatetraenoic acid 1.55 155 0.31 not available quadratic 1/x2Docosahexaenoic-d5

C20:2n6 11,14-Eicosadienoic acid 0.97 96.8 0.31 not available quadratic 1/x2Arachidic-d39

C20:1n9 11-Eicosenoic acid 1.02 102 0.87 not available quadratic 1/x2Arachidic-d39

C20:5n3 Eicosapentaenoic acid 3.97 397 0.79 not available quadratic 1/x2Eicosapentaenoic-d5

C20:3n9 5Z, 8Z, 11Z-Eicosatrienoic acid 0.91 71.8 0.39 not available quadratic 1/x2Arachidic-d39

C18:3n6 gamma- Linolenic acid 2.99 299 0.42 not available linear 1/x2

alpha -Linolenic-d14

C20:3n6 homo-gamma- Linolenic acid 4.63 463 1.14 not available quadratic 1/x2

alpha -Linolenic-d14

C12:0 Lauric acid 1.00 84.0 2.33 not available quadratic 1/x2Lauric-d3

C24:0 Lignoceric acid 1.40 140 1.09 not available linear 1/x2Tetracosanoic-d4

C18:2n6 Linoleic acid 86.4 8635 22.6 not available linear 1/x213C- Linoleic

C14:1n5 Myristoleic acid 1.49 149 0.29 not available quadratic 1/x2 Myristic-d27

C14:0 Myristic acid 10.8 1075 4.90 not available quadratic 1/x2 Myristic-d27

C17:0 Margaric acid 2.85 52.2 3.36 not available quadratic 1/x Margaric-d3

C24:1n9 Nervonic acid 1.99 199 0.69 not available quadratic 1/x2Tetracosanoic-d4

C18:1n9 Oleic acid 89.5 8949 17.7 not available linear 1/x213C-Oleic

C15:0 Pentadecanoic acid 0.50 54.7 0.75 not available linear 1/x2Pentadecanoic-d3

C16:1n7 Palmitoleic acid 25.3 2530 6.56 not available quadratic 1/x2Palmitoleic-d14

C16:0 Palmitic acid 95.9 9591 78.1 not available quadratic 1/x2Palmitic-d31

C18:4n3 Stearidonic acid 0.49 50.3 0.24 not available quadratic 1/x Arachidic-d39

C18:0 Stearic acid 27.2 2721 39.1 not available quadratic 1/x2Stearic-d35

C23:0 Tricosanoic acid 0.83 47.2 0.90 not available linear 1/x2Docosanoic-d4

C18:1n7 cis -Vaccenic acid 7.32 732 2.31 not available quadratic 1/x213C-Oleic
61

Table A-2 (cont) Calibration information

Lab Fatty Acid 

Code

Fatty Acid Name Lowest std

(μmol/L)

Highest std

(μmol/L)

LOD

(μmol/L)

LOQ

(μmol/L)

Curve Type Weighting IS used for quantitation

11 C8:0 Octanoic acid 14 120 quadratic equal C8:0 D3

C10:0 Decanoic acid 13 110 quadratic equal C10:0 D3

C10:1 9-Decenoic acid 16 120 quadratic equal C10:0 D3

C12:0 Lauric acid 12 101 quadratic equal C12:0 D3

C12:1w1 11-Dodecenoic acid 13 108 quadratic equal C12:0 D3

C12:1w7 cis-5-Dodecenoic acid 14 115 quadratic equal C12:0 D3

C14:0 Myristic acid 44 365 quadratic equal C14:0 D3

C14:1 Myristoleic acid 12 102 quadratic equal C15:0 D3

C15:0 Pentadecanoic acid 23 190 quadratic equal C15:0 D3

C16:0 Palmitic acid 468 3900 quadratic equal C16:0 D3

C16:1w7 Palmitoleic acid 127 1058 quadratic equal C14:0 D3

C17:0 Heptadecanoic acid 22 180 quadratic equal C15:0 D3

C18:0 Stearic acid 89 745 quadratic equal C18:0 D3

C18:1w7 Vaccenic acid 241 2010 quadratic equal C18:0 D3

C18:1w9 Oleic acid 600 5000 quadratic equal C18:0 D3

C18:2w6 Linoleic acid 474 3950 quadratic equal C18:0 D3

C18:3w3 a-linolenic acid 55 460 quadratic equal C18:0 D3

C18:3w6 g-linolenic acid 60 500 quadratic equal C18:0 D3

C19:0 Nonadecanoic acid 5 43 quadratic equal C22:0 D3

C20:0 Arachidic acid 115 960 quadratic equal C20:0 D3

C20:3w6 Eicosatrienoic acid (w6) (Homo-g- linolenic acid) 13 112 quadratic equal C22:0 D3

C20:3w9 5,8,11-Eicosatrienoic acid (MEAD) 7 55 quadratic equal C22:0 D3

C20:4w6 Arachidonic acid 121 1000 quadratic equal C20:0 D3

C20:5w3 Eicosapentaenoic acid (w3) 78 650 quadratic equal C20:0 D3

C21:0 Heneicosanoic acid 11 95 quadratic equal C22:0 D3

C22:0 Docosanoic acid (Behenic acid) 14 115 quadratic equal C22:0 D3

C22:1w9 Erucic acid (w9) 3 24 quadratic equal C22:0 D3

C22:4w6 Docosatetraenoic acid (w6) 6 46 quadratic equal C22:0 D3

C22:5w3 Docosapentaenoic acid (w3) 25 210 quadratic equal C22:0 D3

C22:5w6 Docosapentaenoic acid 6 50 quadratic equal C22:0 D3

C22:6w3 Docosahexaenoic acid (w3) 13 108 quadratic equal C22:0 D3

C23:0 Tricosanoic acid 12 97 quadratic equal C24:0 D4

C24:0 Tetracosanoic acid 12 101 quadratic equal C24:0 D4

C24:1w9 Nervonic acid (w9) 23 195 quadratic equal C24:0 D4

C26:0 Hexacosanoic acid 1.4 11.3 quadratic equal C26:0 D4

PhA Phytanic acid 2.6 21.7 quadratic equal PhA D3

PrA Pristanic acid 0.25 2.05 quadratic equal PrA D3

12 C14:0 myristic 2.88 101 0.22 3 quadratic 1/x Methyl Tridecenoate

C16:0 palmitic 60.2 1902 7.44 60 quadratic 1/x Methyl trans-Heptadecenoate

C16:1 palmitoleic 6.08 192 0.94 6 quadratic 1/x Methyl Tridecenoate

C18:0 stearic 28.5 999 1.77 30 quadratic 1/x Methyl trans-Heptadecenoate

C18:1n7 vaccenic 6.08 192 0.79 6 quadratic 1/x Methyl Heneicosanoate

C18:1n9 oleic 60.2 1902 10.26 60 quadratic 1/x Methyl trans-Heptadecenoate

C18:2n6 linoleic 60.2 1902 7.29 60 quadratic 1/x Methyl trans-Heptadecenoate

C18:3n3 alpha-linolenic 2.88 101 0.2 3 quadratic 1/x Methyl Heneicosanoate

C18:3n6 gamma-linolenic 2.88 101 0.19 3 quadratic 1/x Methyl Heneicosanoate

C20:3n6 homo-gamma-linolenic 6.08 192 0.67 6 quadratic 1/x Methyl Heneicosanoate

C20:4n6 arachidonic 28.5 999 1.56 30 quadratic 1/x Methyl trans-Heptadecenoate

C20:5n3 eicosapentaenoic 2.88 101 0.24 3 quadratic 1/x Methyl Tricosenoate

C22:0 docosanoic 2.88 101 0.13 3 quadratic 1/x Methyl Tricosenoate

C22:4n6 docosatetraenoic 2.88 101 0.16 3 quadratic 1/x Methyl Tricosenoate

C22:5n3 docosapentaenoic 2.88 101 0.14 3 quadratic 1/x Methyl Tricosenoate

C22:6n3 docosahexaenoic 6.08 192 0.48 6 quadratic 1/x Methyl Tricosenoate

C24:0 lignoceric 2.88 101 0.13 3 quadratic 1/x Methyl Tricosenoate

C24:1n9 nervonic 2.88 101 0.15 3 quadratic 1/x Methyl Tricosenoate

13 No information provided
62

Table A-2 (cont) Calibration information

Lab Fatty Acid 

Code

Fatty Acid Name Lowest std

(μmol/L)

Highest std

(μmol/L)

LOD

(μmol/L)

LOQ

(μmol/L)

Curve Type Weighting IS used for quantitation

14 C6:0 Hexanoic acid 0.078 1536.33 0.03 0.08 quadratic 1/x2

C8:0 Octanoic acid 0.064 1263.90 0.02 0.06 quadratic 1/x2

C10:0 Decanoic acid 0.027 536.80 0.01 0.03 quadratic 1/x2

C11:0 Undecanoic acid 0.051 998.40 0.02 0.05 quadratic 1/x2

C12:0 Dodecanoic acid 0.024 466.55 0.01 0.02 quadratic 1/x3

C13:0 Tridecanoic acid 0.044 875.77 0.01 0.04 quadratic 1/x4

C14:0 Tetradecanoic acid 0.042 825.08 0.01 0.04 quadratic 1/x5

C14:1n5t 9-trans-Tetradecenoic acid 0.021 416.01 0.01 0.02 quadratic 1/x6

C14:1n5c 9-cis-Tetradecenoic acid 0.042 832.02 0.01 0.04 quadratic 1/x7

C15:0 Pentadecanoic acid 0.040 779.97 0.01 0.04 quadratic 1/x8

C15:1n5t 10-trans-Pentadecenoic acid 0.020 393.07 0.01 0.02 quadratic 1/x9

C15:1n5c 10-cis-Pentadecenoic acid 0.040 786.13 0.01 0.04 quadratic 1/x10

C16:0 Hexadecanoic acid 0.056 1109.26 0.02 0.06 quadratic 1/x11

C16:1n7t 9-trans-Hexadecenoic acid 0.019 372.54 0.01 0.02 quadratic 1/x12

C16:1n7c 9-cis-Hexadecenoic acid 0.038 745.07 0.01 0.04 quadratic 1/x13

C17:0 Heptadecanoic acid 0.054 1054.56 0.02 0.05 quadratic 1/x14

C17:1n7t 10-trans-Heptadecenoic acid, (10E) 0.036 708.06 0.01 0.04 quadratic 1/x15

C17:1n7c 10-cis-Heptadecenoic acid, (10Z) 0.036 708.06 0.01 0.04 quadratic 1/x16

C18:0 Octadecanoic acid 0.034 670.02 0.01 0.03 quadratic 1/x17

C18:1n12t 6-trans-Octadecenoic acid, (E)- 0.034 674.56 0.01 0.03 quadratic 1/x18

C18:1n9t 9-trans-Octadecenoic acid, (E)- 0.051 1011.84 0.02 0.05 quadratic 1/x19

C18:1n7t 11-trans-Octadecenoic acid, (E)- 0.017 337.28 0.01 0.02 quadratic 1/x20

C18:1n12c 6-cis-Octadecenoic acid, (6Z)- 0.034 674.56 0.01 0.03 quadratic 1/x21

C18:1n9c 9-cis-Octadecenoic acid (9Z)- 0.034 674.56 0.01 0.03 quadratic 1/x22

C18:1n7c 11-cis-Octadecenoic acid, (Z)- 0.034 674.56 0.01 0.03 quadratic 1/x23

C19:0 Nonadecanoic acid quadratic 1/x24 Nonadecanoic acid

C18:2n6t 9,12-trans-Octadecadienoic acid (E,E) 0.035 679.19 0.01 0.03 quadratic 1/x25

C19:1n12t 7-trans-Nonadecenoic acid, (7E)- 0.016 322.05 0.01 0.02 quadratic 1/x26

C19:1n10t 10-trans-Nonadecenoic acid, (10E)- 0.033 644.10 0.01 0.03 quadratic 1/x27

C18:2n6c 9,12-cis-Octadecadienoic acid (Z,Z) 0.052 1018.78 0.02 0.05 quadratic 1/x28

C20:0 Eicosanoic acid 0.031 612.44 0.01 0.03 quadratic 1/x29

C18:3n6c 6,9,12-cis-Octadecatrienoic acid, (6Z,9Z,12Z)- 0.052 1025.78 0.02 0.05 quadratic 1/x30

C20:1n9t 11-trans-Eicosenoic acid, (11E)- 0.016 308.13 0.01 0.02 quadratic 1/x31

C18:3n3c 9,12,15-cis-Octadecatrienoic acid, (9Z,12Z,15Z)- 0.052 1025.78 0.02 0.05 quadratic 1/x32

C20:1n9c 11-cis-Eicosenoic acid, (11Z)- 0.031 616.26 0.01 0.03 quadratic 1/x33

C21:0 Heneicosanoic acid 0.030 587.23 0.01 0.03 quadratic 1/x34

C20:2n6c 11,14-cis-Eicosadienoic 0.047 930.15 0.02 0.05 quadratic 1/x35

C22:0 Docosanoic acid 0.014 282.00 0.00 0.01 quadratic 1/x36

C20:3n6c 8,11,14-cis-Eicosatrienoic acid, (8Z,11Z,14Z)- 0.032 624.01 0.01 0.03 quadratic 1/x37

C22:1n9t 13-trans-Docosenoic acid, (13E)- 0.014 283.62 0.00 0.01 quadratic 1/x38

C20:3n3c 11,14,17-cis-Eicosatrienoic acid 0.032 624.01 0.01 0.03 quadratic 1/x39

C22:1n9c 13-cis-Docosenoic acid, (13Z)- 0.029 567.23 0.01 0.03 quadratic 1/x40

C20:4n6c 5,8,11,14-cis-Eicosatetraenoic acid ) 0.048 941.94 0.02 0.05 quadratic 1/x41

C23:0 Tricosanoic acid 0.028 542.53 0.01 0.03 quadratic 1/x42 Tricosanoic acid

C22:2n6c 13,16-cis-Docosadienoic acid 0.029 570.48 0.01 0.03 quadratic 1/x43

C20:5n3 5,8,11,14,17-cis-Eicosapentaenoic acid, (5Z,8Z,11Z,14Z,17Z)- 0.032 631.95 0.01 0.03 quadratic 1/x44

C24:0 Tetracosanoic acid 0.013 261.33 0.00 0.01 quadratic 1/x45

C24:1n9c 15-cis-Tetracosenoic acid, (15Z)- 0.013 262.71 0.00 0.01 quadratic 1/x46

C22:4n6c 7,10,13,16-cis-Docosatetraenoic acid, (7Z,10Z,13Z,16Z)- 0.029 577.12 0.01 0.03 quadratic 1/x47

C22:5n6c 4,7,10,13,16-cis-Docosapentaenoic acid, (4Z,7Z,10Z,13Z,16Z) 0.029 580.50 0.01 0.03 quadratic 1/x48

C22:5n3c 7,10,13,16,19-cis-Docosapentaenoic acid, (7Z,10Z,13Z,16Z,19Z)- 0.029 580.50 0.01 0.03 quadratic 1/x49

C22:6n3c 4,7,10,13,16,19-cis-Docosahexaenoic acid, (4Z,7Z,10Z,13Z,16Z,19Z) 0.030 583.92 0.01 0.03 quadratic 1/x50
63

Table A-3 Additional notes provided by laboratories

Lab # Note:

3 C18:1n9 used for quantitation of C18:1n7

C22:5n3 used for quantitation of C22:5n6

8 The 50μLplasma sample aliquots were not weighed and density was not determined. Density value above is taken fromWikipedia.

Each sample was analyzed in duplicate and the two values averaged.

C16:1n7 sits on the right shoulder of C16:0 and touches C16:1n7t to its left

C18:1n7 elutes on the right shoulder of C18:1n9

C20:3n6 elutes on the left shoulder of C20:4n6

C20:4n3 and C20:5n3 are partially resolved

C21:0coelutes between C20:4n3 and C20:5n3, but is spectrally resolved

cholesteryl-C22:1n9 was used as a surrogate, therefore C22:1n9was not determined

C22:4n6 and C22:5n6 are partially resolved

C22:5n3 and C22:6n3 are partially resolved

C24:1n9 (Nervonic acid) was not detected.

11 C22:1n9 - probably reading low on our current calibrators. New compound fromalternate source to be trialled.

Ongoing problems with contamination froman unknown source, causing poor recovery forsome analytes. (e.g. C24:1n9,C18).This is noted in some

internalstandard recoveries, requiring repeat extraction. Unknown effect on stability of this QA material.

C14:1 used for quantitation of C15:0 and C16:2

C16:1n7 used for quantitation of C16:2

C26:0 used for quantitation of C26:1

12 C18:1n7 in Unk01 and Unk 02 -Values were found but the qualifier ion ratio did not meet acceptance limits. Data not reported. Possbly an interference.

C20:3n6 - we are saying that eicosatrienoc acid and homo-gamma linolenic are synonyms

14 alpha and gamma linolenic acid probably coeluting not able to distiguish between them.
64

Appendix B.

Charts of interlaboratory data received for the individual fatty acids in each

material (in terms of μg/g) with the median identified for the three unknown

samples and the certified or reference value with associated confidence interval

identified for each level of candidate SRM 2378.

The charts are presented in the order of an individual fatty acid in each of the six

materials (unknown 01, unknown 02, unknown 03, SRM 2378-1, SRM 2378-2,

and SRM 2378-3) with the fatty acids in the order presented in Table 1. Note if

less than three laboratories reported numerical data for a fatty acid, no chart is

presented.

Note that a revised set of data received from lab 8 on September 8, 2015 following

an initial review of the interlaboratory data is summarized in Appendix D of this

report. They found an error in the concentration of the surrogate (d31 C16:0) used

for recovery corrections. The data in Appendix D used C22:1n9 for the recovery

corrections instead of d31 C16:0 which they suspect did not go completely into

solution.
65

Unknown 01 - C14:0

median 15.2 μg/g

30.0

28.0

26.0

24.0

22.0

20.0

18.0

16.0

14.0

12.0

10.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C14:0

median 19.2 μg/g

60.0

55.0

50.0

45.0

40.0

35.0

30.0

25.0

20.0

15.0

10.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
66

Unknown 03 - C14:0

median 49.6 μg/g

120.0

110.0

100.0

90.0

80.0

70.0

60.0

50.0

40.0

30.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C14:0

Cert value (44.6 1.5) μg/g

95.0

85.0

75.0

65.0

55.0

45.0

35.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
67

SRM 2378-2 - C14:0

Cert value (33.8 1.2) μg/g

70.0

65.0

60.0

55.0

50.0

45.0

40.0

35.0

30.0

25.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C14:0

Cert value (34.6 0.8) μg/g

60.0

55.0

50.0

45.0

40.0

35.0

30.0

25.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
68

Unknown 01 - C14:1n5

median 0.722 μg/g

2.00

1.80

1.60

1.40

1.20

1.00

0.80

0.60

0.40

0.20

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C14:1n5

median 1.50 μg/g

4.00

3.50

3.00

2.50

2.00

1.50

1.00

0.50

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
69

Unknown 03 - C14:1n5

median 3.44 μg/g

5.50

5.00

4.50

4.00

3.50

3.00

2.50

2.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C14:1n5

Ref value (3.4 1.5) μg/g

5.50

5.00

4.50

4.00

3.50

3.00

2.50

2.00

1.50

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
70

SRM 2378-2 - C14:1n5

Ref value (2.8 1.5) μg/g

4.50

4.00

3.50

3.00

2.50

2.00

1.50

1.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C14:1n5

Ref value (3.2 1.7) μg/g

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
71

Unknown 01 - C16:0

median 547 μg/g

990

890

790

690

590

490

390

0 1 2 3 4 5 6 7

Lab #

8 9 10 11 12 13 14 15

Unknown 02 - C16:0

median 538 μg/g

1250

1150

1050

950

850

750

650

550

450

350

0 1 2 3 4 5 6 7

Lab #

8 9 10 11 12 13 14 15

μg/g μg/g
72

Unknown 03 - C16:0

median 941 μg/g

1550

1350

1150

950

750

550

0 1 2 3 4 5 6 7

Lab #

8 9 10 11 12 13 14 15

SRM 2378-1 - C16:0

Cert value (833 87) μg/g

1,450

1,250

1,050

850

650

450

250

50

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
73

SRM 2378-2 - C16:0

Cert value (715 111) μg/g

1400

1300

1200

1100

1000

900

800

700

600

500

400

0 1 2 3 4 5 6 7

Lab #

8 9 10 11 12 13 14 15

SRM 2378-3 - C16:0

Cert value (642 114) μg/g

1,150

1,050

950

850

750

650

550

450

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
74

Unknown 01 - C16:1n7

median 35.2 μg/g

100

90

80

70

60

50

40

30

20

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C16:1n7

median 46.3 μg/g

120

100

80

60

40

20

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
75

Unknown 03 - C16:1n7

median 48.0 μg/g

145

125

105

85

65

45

25

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C16:1n7

Cert value (53.4 3.8) μg/g

120

110

100

90

80

70

60

50

40

30

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
76

SRM 2378-2 - C16:1n7

Cert value (69.1 6.9) μg/g

150

130

110

90

70

50

30

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C16:1n7

Cert value (45.7 3.2) μg/g

85.0

75.0

65.0

55.0

45.0

35.0

25.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
77

Unknown 01 - C18:0

median 209 μg/g

560

510

460

410

360

310

260

210

160

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C18:0

median 190 μg/g

640

540

440

340

240

140

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
78

Unknown 03 - C18:0

median 337 μg/g

850

750

650

550

450

350

250

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C18:0

Cert value (221 25) μg/g

590

540

490

440

390

340

290

240

190

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
79

SRM 2378-2 - C18:0

Cert value (231 14) μg/g

675

575

475

375

275

175

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C18:0

Cert value (194 21) μg/g

470

420

370

320

270

220

170

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
80

Unknown 01 - C18:1n7

median 47.2 μg/g 1194 (108)

85.0

75.0

65.0

55.0

45.0

35.0

25.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C18:1n7

median 39.7 μg/g 1187 (266)

100

90

80

70

60

50

40

30

20

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
81

Unknown 03 - C18:1n7

median 54.8 μg/g 1567 (63)

95.0

85.0

75.0

65.0

55.0

45.0

35.0

25.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C18:1n7

Ref value (41.3 7.4) μg/g 1198

100

90

80

70

60

50

40

30

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
82

SRM 2378-2 - C18:1n7

Ref value (35.6 6.0) μg/g 1425

95.0

85.0

75.0

65.0

55.0

45.0

35.0

25.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C18:1n7

Ref value (32.0 3.3) μg/g 1037

65.0

60.0

55.0

50.0

45.0

40.0

35.0

30.0

25.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
83

Unknown 01 - C18:1n9

median 484 μg/g

900

800

700

600

500

400

300

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C18:1n9

median 441 μg/g

970

870

770

670

570

470

370

270

0 1 2 3 4 5 6 7

Lab #

8 9 10 11 12 13 14 15

μg/g μg/g
84

Unknown 03 - C18:1n9

median 711 μg/g

1350

1250

1150

1050

950

850

750

650

550

450

0 1 2 3 4 5 6 7

Lab #

8 9 10 11 12 13 14 15

SRM 2378-1 - C18:1n9

Cert value (604 66) μg/g

1,200

1,100

1,000

900

800

700

600

500

400

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
85

SRM 2378-2 - C18:1n9

Cert value (738 52) μg/g

1450

1250

1050

850

650

450

0 1 2 3 4 5 6 7

Lab #

8 9 10 11 12 13 14 15

SRM 2378-3 - C18:1n9

Cert value (569 66) μg/g

1,100

1,000

900

800

700

600

500

400

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
86

Unknown 01 - C18:2n6

median 857 μg/g

1400

1200

1000

800

600

400

0 1 2 3 4 5 6 7

Lab #

8 9 10 11 12 13 14 15

Unknown 02 - C18:2n6

median 801 μg/g

1400

1300

1200

1100

1000

900

800

700

600

500

400

0 1 2 3 4 5 6 7

Lab #

8 9 10 11 12 13 14 15

μg/g μg/g
87

Unknown 03 - C18:2n6

median 1102 μg/g

2300

2100

1900

1700

1500

1300

1100

900

700

500

0 1 2 3 4 5 6 7

Lab #

8 9 10 11 12 13 14 15

SRM 2378-1 - C18:2n6

Cert value (1026 176) μg/g

2,100

1,900

1,700

1,500

1,300

1,100

900

700

500

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
88

SRM 2378-2 - C18:2n6

Cert value (1224 12) μg/g

2500

2000

1500

1000

500

0 1 2 3 4 5 6 7

Lab #

8 9 10 11 12 13 14 15

SRM 2378-3 - C18:2n6

Cert value (913 6) μg/g

1,890

1,690

1,490

1,290

1,090

890

690

490

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
89

Unknown 01 - C18:3n3

median 12.2 μg/g

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C18:3n3

median 16.1 μg/g

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
90

Unknown 03 - C18:3n3

median 20.9 μg/g

45.0

40.0

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C18:3n3

Cert value (32.5 4.1) μg/g

70.0

60.0

50.0

40.0

30.0

20.0

10.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
91

SRM 2378-2 - C18:3n3

Cert value (31.5 1.3) μg/g

70.0

60.0

50.0

40.0

30.0

20.0

10.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C18:3n3

Cert value (17.0 0.1) μg/g

40.0

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
92

Unknown 01 - C18:3n6

median 6.26 μg/g

12.0

11.0

10.0

9.0

8.0

7.0

6.0

5.0

4.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C18:3n6

median 10.4 μg/g

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
93

Unknown 03 - C18:3n6

median 19.8 μg/g

45.0

40.0

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C18:3n6

Cert value (12.3 1.6) μg/g

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
94

SRM 2378-2 - C18:3n6

Cert value (21.0 0.4) μg/g

45.0

40.0

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C18:3n6

Cert value (14.6 1.0) μg/g

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
95

Unknown 01 - C20:0

median 5.45 μg/g

18.0

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C20:0

median 4.61 μg/g

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
96

Unknown 03 - C20:0

median 7.92 μg/g

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C20:0

Ref value (7.6 1.1) μg/g

18.0

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
97

SRM 2378-2 - C20:0

Ref value (8.7 1.5) μg/g

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C20:0

Ref value (7.9 2.7) μg/g

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
98

Unknown 01 - C20:1n9

median 5.94 μg/g

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C20:1n9

median 3.71 μg/g

18.0

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
99

Unknown 03 - C20:1n9

median 6.17 μg/g

20.0

18.0

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C20:1n9

Ref value (6.0 1.0) μg/g

23.0

18.0

13.0

8.0

3.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
100

SRM 2378-2 - C20:1n9

Ref value (5.7 1.0) μg/g

23.0

21.0

19.0

17.0

15.0

13.0

11.0

9.0

7.0

5.0

3.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C20:1n9

Ref value (5.88 0.43) μg/g

12.0

11.0

10.0

9.0

8.0

7.0

6.0

5.0

4.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
101

Unknown 01 - C20:2n6

median 6.96 μg/g

21.0

19.0

17.0

15.0

13.0

11.0

9.0

7.0

5.0

3.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C20:2n6

median 6.11 μg/g

21.0

19.0

17.0

15.0

13.0

11.0

9.0

7.0

5.0

3.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
102

Unknown 03 - C20:2n6

median 8.19 μg/g

24.0

22.0

20.0

18.0

16.0

14.0

12.0

10.0

8.0

6.0

4.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C20:2n6

No ref value

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
103

SRM 2378-2 - C20:2n6

No ref value

21.0

19.0

17.0

15.0

13.0

11.0

9.0

7.0

5.0

3.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C20:2n6

No ref value

20.0

18.0

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
104

Unknown 01 - C20:3n6

median 36.2 μg/g

145

125

105

85

65

45

25

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C20:3n6

median 40.5 μg/g

150

130

110

90

70

50

30

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
105

Unknown 03 - C20:3n6

median 61.1 μg/g

205

185

165

145

125

105

85

65

45

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C20:3n6

No ref value

105

95

85

75

65

55

45

35

25

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
106

SRM 2378-2 - C20:3n6

No ref value

175

155

135

115

95

75

55

35

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C20:3n6

No ref value

100

90

80

70

60

50

40

30

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
107

Unknown 01 - C20:4n6

median 204 μg/g

725

625

525

425

325

225

125

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C20:4n6

median 150 μg/g

600

550

500

450

400

350

300

250

200

150

100

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
108

Unknown 03 - C20:4n6

median 242 μg/g

850

750

650

550

450

350

250

150

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C20:4n6

Cert value (196 20) μg/g

630

530

430

330

230

130

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
109

SRM 2378-2 - C20:4n6

Cert value (235 26) μg/g

740

640

540

440

340

240

140

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C20:4n6

Cert value (228 14) μg/g

570

520

470

420

370

320

270

220

170

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
110

Unknown 01 - C20:5n3

median 8.47 μg/g

100

80

60

40

20

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C20:5n3

median 36.8 μg/g

180

160

140

120

100

80

60

40

20

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
111

Unknown 03 - C20:5n3

median 22.4 μg/g

130

110

90

70

50

30

10

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C20:5n3

Cert value (84 11) μg/g

350

300

250

200

150

100

50

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
112

SRM 2378-2 - C20:5n3

Cert value (20.7 0.8) μg/g

130

110

90

70

50

30

10

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C20:5n3

Cert value (18.9 2.2) μg/g

95

85

75

65

55

45

35

25

15

5

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
113

Unknown 01 - C22:0

median 13.7 μg/g

90

80

70

60

50

40

30

20

10

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C22:0

median 10.1 μg/g

70

60

50

40

30

20

10

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
114

Unknown 03 - C22:0

median 19.4 μg/g

100

90

80

70

60

50

40

30

20

10

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C22:0

Ref value (18.8 4.3) μg/g

90

80

70

60

50

40

30

20

10

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
115

SRM 2378-2 - C22:0

Ref value (28.7 8.8) μg/g

120

100

80

60

40

20

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C22:0

Ref value (19.2 4.5) μg/g

80

70

60

50

40

30

20

10

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
116

Unknown 01 - C22:1n9

median 1.55 μg/g

35

30

25

20

15

10

5

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C22:1n9

median 1.05 μg/g

35

30

25

20

15

10

5

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
117

Unknown 03 - C22:1n9

median 1.33 μg/g

25

20

15

10

5

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C22:1n9

Ref value (1.7 1.0) μg/g

16

14

12

10

8

6

4

2

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
118

SRM 2378-2 - C22:1n9

Ref value (1.7 0.9) μg/g

30

25

20

15

10

5

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C22:1n9

Ref value (1.9 1.3) μg/g

12

10

8

6

4

2

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
119

Unknown 01 - C22:4n6

median 6.54 μg/g

44

39

34

29

24

19

14

9

4

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C22:4n6

median 6.27 μg/g

38

33

28

23

18

13

8

3

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
120

Unknown 03 - C22:4n6

median 7.83 μg/g

50

40

30

20

10

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C22:4n6

No ref value

28

23

18

13

8

3

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
121

SRM 2378-2 - C22:4n6

No ref value

45

40

35

30

25

20

15

10

5

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C22:4n6

No ref value

34

29

24

19

14

9

4

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
122

Unknown 01 - C22:5n3

median 9.91 μg/g

45

40

35

30

25

20

15

10

5

0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C22:5n3

median 20.7 μg/g

55

45

35

25

15

5

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
123

Unknown 03 - C22:5n3

median 18.2 μg/g

76

66

56

46

36

26

16

6

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C22:5n3

Cert value (22.4 1.2) μg/g

90

80

70

60

50

40

30

20

10

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
124

SRM 2378-2 - C22:5n3

Cert value (17.0 0.8) μg/g

55

45

35

25

15

5

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C22:5n3

Cert value (11.4 0.6) μg/g

62

52

42

32

22

12

2

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
125

Unknown 01 - C22:5n6

median 5.09 μg/g 85.1 (34.3)

6.00

5.50

5.00

4.50

4.00

3.50

3.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C22:5n6

median 3.37 μg/g 115 (10)

8.00

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
126

Unknown 03 - C22:5n6

median 7.39 μg/g 110 (4)

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C22:5n6

No ref value 135

7.00

6.50

6.00

5.50

5.00

4.50

4.00

3.50

3.00

2.50

2.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
127

SRM 2378-2 - C22:5n3

No ref value 93.4

11.0

10.0

9.0

8.0

7.0

6.0

5.0

4.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C22:5n6

No ref value 61.2

11.0

10.0

9.0

8.0

7.0

6.0

5.0

4.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
128

Unknown 01 - C22:6n3

median 45.7 μg/g 287 (57)

75.0

70.0

65.0

60.0

55.0

50.0

45.0

40.0

35.0

30.0

25.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C22:6n3

median 64.1 μg/g 347 (82)

110

90

70

50

30

10

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
129

Unknown 03 - C22:6n3

median 7.39 μg/g 453 (12)

180

160

140

120

100

80

60

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C22:6n3

Cert value (104 5) μg/g 477

220

200

180

160

140

120

100

80

60

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
130

SRM 2378-2 - C22:6n3

Cert value (55.4 2.3) μg/g 256

108

98

88

78

68

58

48

38

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C22:6n3

Cert value (54.9 2.4) μg/g 233

115

105

95

85

75

65

55

45

35

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
131

Unknown 01 - C24:0

median 12.1 μg/g 126 (22)

20.0

18.0

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C24:0

median 9.87 μg/g 102 (10)

16.0

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
132

Unknown 03 - C24:0

median 17.5 μg/g 149 (43)

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C24:0

Ref value (19 5) μg/g 136

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
133

SRM 2378-2 - C24:0

Ref value (25 9) μg/g 160

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C24:0

Ref value (18 6) μg/g 114

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
134

Unknown 01 - C24:1n9

median 23.0 μg/g 184 (34)

45.0

40.0

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C24:1n9

median 18.0 μg/g 123 (31)

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
135

Unknown 03 - C24:1n9

median 17.5 μg/g 146 (47)

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C24:1n9

Ref value (32 9) μg/g 159

43.0

38.0

33.0

28.0

23.0

18.0

13.0

8.0

3.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
136

SRM 2378-2 - C24:1n9

Ref value (30 17) μg/g 139

50.0

45.0

40.0

35.0

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C24:1n9

Ref value (22 9) μg/g 106

30.0

25.0

20.0

15.0

10.0

5.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
137

Unknown 01 - C10:0

median 0.690 μg/g

1.00

0.90

0.80

0.70

0.60

0.50

0.40

0.30

0.20

0.10

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C10:0

median 0.365 μg/g

1.00

0.90

0.80

0.70

0.60

0.50

0.40

0.30

0.20

0.10

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
138

Unknown 03 - C10:0

median 1.82 μg/g

2.50

2.00

1.50

1.00

0.50

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C10:0

Ref value (3.56 0.04) μg/g

6.00

5.50

5.00

4.50

4.00

3.50

3.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
139

SRM 2378-2 - C10:0

Ref value (0.3 0.1) μg/g

1.20

1.00

0.80

0.60

0.40

0.20

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C10:0

Ref value (0.89 0.15) μg/g

2.00

1.80

1.60

1.40

1.20

1.00

0.80

0.60

0.40

0.20

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
140

Unknown 01 - C12:0

median 1.50 μg/g

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C12:0

median 1.78 μg/g

12.0

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
141

Unknown 03 - C12:0

median 5.01 μg/g

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C12:0

No ref value

15.0

13.0

11.0

9.0

7.0

5.0

3.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
142

SRM 2378-2 - C12:0

No ref value

12.0

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C12:0

No ref value

15.0

13.0

11.0

9.0

7.0

5.0

3.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
143

Unknown 01 - C15:0

median 3.51 μg/g

6.00

5.00

4.00

3.00

2.00

1.00

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C15:0

median 3.60 μg/g

6.00

5.00

4.00

3.00

2.00

1.00

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
144

Unknown 03 - C15:0

median 11.1 μg/g

22.0

20.0

18.0

16.0

14.0

12.0

10.0

8.0

6.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C15:0

Ref value (5.14 0.16) μg/g

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
145

SRM 2378-2 - C15:0

Ref value (6.76 0.0.16) μg/g

12.0

11.0

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C15:0

Ref value (4.92 0.12) μg/g

7.00

6.00

5.00

4.00

3.00

2.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
146

Unknown 01 - C17:0

median 5.78 μg/g

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C17:0

median 6.35 μg/g

8.00

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
147

Unknown 03 - C17:0

median 11.3 μg/g

14.0

12.0

10.0

8.0

6.0

4.0

2.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C17:0

Ref value (7.11 0.47) μg/g

9.00

8.00

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
148

SRM 2378-2 - C17:0

Ref value (8.84 0.21) μg/g

11.0

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C17:0

Ref value (7.02 0.37) μg/g

8.00

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
149

Unknown 01 - C20:3n9

median 2.44 μg/g

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C20:3n9

median 2.61 μg/g

6.00

5.50

5.00

4.50

4.00

3.50

3.00

2.50

2.00

1.50

1.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
150

Unknown 03 - C20:3n9

median 2.68 μg/g

6.00

5.50

5.00

4.50

4.00

3.50

3.00

2.50

2.00

1.50

1.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C20:3n9

Ref value (1.40 0.09) μg/g

6.00

5.50

5.00

4.50

4.00

3.50

3.00

2.50

2.00

1.50

1.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
151

SRM 2378-2 - C20:3n9

Ref value (2.13 0.07) μg/g

6.00

5.50

5.00

4.50

4.00

3.50

3.00

2.50

2.00

1.50

1.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C20:3n9

Ref value (2.26 0.03) μg/g

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
152

Unknown 01 - C21:0

median 0.515 μg/g

4.00

3.50

3.00

2.50

2.00

1.50

1.00

0.50

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C21:0

median 1.55 μg/g

4.00

3.50

3.00

2.50

2.00

1.50

1.00

0.50

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
153

Unknown 03 - C21:0

median 0.877 μg/g

4.00

3.50

3.00

2.50

2.00

1.50

1.00

0.50

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C21:0

No ref value

4.00

3.50

3.00

2.50

2.00

1.50

1.00

0.50

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
154

SRM 2378-2 - C21:0

No ref value

5.00

4.50

4.00

3.50

3.00

2.50

2.00

1.50

1.00

0.50

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C21:0

No ref value

3.00

2.50

2.00

1.50

1.00

0.50

0.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
155

Unknown 01 - C23:0

median 7.54 μg/g

12.0

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

Unknown 02 - C23:0

median 5.39 μg/g

10.0

8.0

6.0

4.0

2.0

0.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
156

Unknown 03 - C23:0

median 9.36 μg/g

17.0

15.0

13.0

11.0

9.0

7.0

5.0

3.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-1 - C23:0

Ref value (8.19 0.19) μg/g

12.0

11.0

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
157

SRM 2378-2 - C23:0

Ref value (13.1 0.5) μg/g

15.0

14.0

13.0

12.0

11.0

10.0

9.0

8.0

7.0

6.0

5.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

SRM 2378-3 - C23:0

Ref value (7.75 0.07) μg/g

9.00

8.00

7.00

6.00

5.00

4.00

3.00

2.00

1.00

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Lab #

μg/g μg/g
158

Appendix C.

Participants in the second interlaboratory analytical comparison study of total fatty

acid concentrations in human serum (alphabetical order unrelated to the laboratory

numbering in this report)

Bumrungrad Hospital Public Company Limited

Bangkok 10110

THAILAND

Sukon Chalachiva

Centers for Disease Control and Prevention

Nutritional Biomarkers Branch

Atlanta, GA 30341

Carissa Powers and Rosemary Schleicher

Craft Technologies

Wilson, NC 27893

Donna Springs and Neal Craft

Health Canada

Nutrition Research Division

Ottawa, Ontario K1A 0K9

CANADA

Eleonora Swist

Matar Pathology

Clinical Chemistry

South Brisbane, Queensland 4101

AUSTRALIA

Matthew Reimer

Mayo Clinic

Biochemical Genetics Laboratory

Rochester, MN 55905

Angela Tauscher

Minnesota Deptartment of Health

Public Health Laboratory

Saint Paul, MN 55155

Mark Lunda and Paul Swedenborg
159

National Institute of Standards and Technology

Chemical Sciences Division

Gaithersburg, MD 20899

Michele Schantz

Polytechnic Institute of Bragança

Escola Superior de Tecnologia e Gestão

5300-253 Bragança

PORTUGAL

Joana Amaral

UCLA

Center for Human Nutrition

Los Angeles, CA 90095

Susanne Henning

University of Auckland

Auckland Science Analytical Services, School of Biological Sciences

Auckland 1010

NEW ZEALAND

Erica Zarate

University of Michigan

Cancer Center

Ann Arbor, MI 48109

Jianwei Ren and Zora Djuric

University of Waterloo

Department of Kinesiology

Waterloo, Ontario N2L 5W7

CANADA

Ken Stark

USDA-ARS

Western Human Nutrition Center

Davis, CA 95616

John Newman and Theresa Pedersen
160

Appendix D.

Revised set of data received from lab 8 on September 8, 2015 following an initial

review of the interlaboratory data. They found an error in the concentration of the

surrogate (d31 C16:0) used for recovery corrections. These data used C22:1n9 for

the recovery corrections instead of d31 C16:0 which they suspect did not go

completely into solution. Table numbers refer to the tables shown in this report.
161

Lab 8 Revised data for Fatty Acid Mass Fractions in Human Serum (μg/g ) Exercise 2

Table 2 Table 4 Table 6 Table 8 Table 10 Table 12

Unknown 1 Unknown 2 Unknown 3 SRM 2378

Code mean stdev rsd mean stdev rsd mean stdev rsd 2378-1 2378-2 2378-3

C14:0 11.0 0.3 3.12% 15.9 0.5 2.97% 40.4 1.7 4.20% 43.0 29.7 30.0

C14:1n5 0.504 0.070 13.98% 1.15 0.04 3.53% 2.58 0.10 3.98% 2.57 1.88 2.10

C16:0 487 19 3.83% 481 6 1.21% 778 32 4.15% 734 678 540

C16:1n7 29.0 1.0 3.56% 43.3 1.5 3.37% 40.2 1.6 4.09% 51.8 62.3 39.2

C18:0 174 7 4.12% 166 4 2.35% 274 10 3.71% 216 222 178

C18:1n7 30.5 1.9 6.25% 28.6 0.4 1.38% 30.4 1.4 4.73% 36.2 35.4 26.5

C18:1n9 449 16 3.65% 430 7 1.51% 638 24 3.70% 599 747 500

C18:2n6 769 30 3.96% 708 9 1.28% 916 36 3.95% 898 1077 767

C18:3n3 9.13 0.33 3.63% 13.1 0.6 4.32% 16.1 0.6 3.56% 26.5 26.2 12.9

C18:3n6 5.64 0.26 4.58% 9.99 0.39 3.94% 18.0 0.6 3.49% 11.4 20.9 12.7

C20:0 0.620 0.026 4.12% 0.715 0.029 4.02% 1.16 0.03 2.24% 2.04 1.19 1.61

C20:1n9 3.04 0.36 11.78% 2.03 0.26 12.94% 2.59 0.10 4.04% 3.99 3.24 3.38

C20:2n6 6.15 0.43 6.95% 5.77 0.39 6.73% 6.97 0.34 4.92% 4.90 5.81 4.24

C20:3n6 29.7 0.9 2.99% 37.5 0.7 1.80% 58.4 2.9 4.92% 29.5 52.1 28.1

C20:4n6 215 10 4.71% 159 4 2.74% 257 8 3.30% 225 284 239

C20:5n3 6.29 0.24 3.82% 34.26 1.27 3.70% 18.7 0.7 3.56% 83.1 18.8 15.1

C22:0 0.288 0.032 11.25% 0.287 0.028 9.85% 0.479 0.038 7.93% 1.03 0.618 1.26

C22:1n9 NA NA NA NA NA NA

C22:4n6 4.92 0.31 6.35% 4.28 0.23 5.40% 6.03 0.40 6.62% 4.09 6.06 5.03

C22:5n3 7.07 0.25 3.56% 16.47 0.74 4.47% 12.5 0.1 0.71% 16.5 13.2 8.0

C22:5n6 3.82 0.19 4.98% 2.66 0.22 8.38% 6.43 0.25 3.81% 2.71 4.7 4.2

C22:6n3 38.8 1.9 4.94% 61.4 2.6 4.26% 80.7 2.5 3.15% 100 48.1 45.6

C24:0 0.268 0.054 20.06% 0.270 0.060 22.13% 0.575 0.008 1.37% 0.959 0.685 1.05

C24:1n9 <LOD <LOD <LOD <LOD <LOD <LOD

List any additional information such as known coelutions or results for additional fatty acids below:

C8:0

C10:0

C10:1

C12:0 1.12 0.07 6.24% 1.37 0.06 4.19% 3.85 0.19 4.90% 6.63 2.59 5.86

C12:1n1

C12:1n7

C14:2

C15:0 2.70 0.11 4.13% 3.15 0.19 5.91% 8.77 0.28 3.15% 5.12 6.40 4.23

C16:1n9

C16:2

C17:0 4.78 0.21 4.43% 5.38 0.28 5.20% 9.55 0.35 3.67% 5.97 7.03 5.08

C17:1

C18:1n9t

9c,11t-CLA 2.35 0.08 3.27% 3.16 0.15 4.78% 6.78 0.28 4.09% 2.17 3.83 2.65

C18:4n3 0.174 0.038 21.87% 0.605 0.045 7.36% 0.833 0.064 7.71% 2.97 1.43 0.87

C19:0 0.347 0.028 8.12% 0.376 0.005 1.40% 0.692 0.016 2.32% 0.666 0.484 0.506

C20:3n3 0.378 0.070 18.41% 0.532 0.045 8.52% 0.830 0.089 10.69% 0.482 0.514 0.357

C20:3n9

C20:4n3 0.536 0.063 11.76% 1.83 0.12 6.77% 2.18 0.03 1.33% 1.99 2.39 0.91

C21:0 0.237 0.005 2.17% 1.19 0.05 4.55% 0.676 0.017 2.56% 2.94 0.67 0.56

C22:2n6

C23:0

C26:0

C26:1

PhA

PtA

density (g/mL) 1.03 1.03 1.03 1.03 1.03 1.03
162

Lab 8 Revised data for Fatty Acid Concentrations in Human Serum (μM) Exercise 2

List any additional information such as known coelutions or results for additional fatty acids below:

C8:0

C10:0

C10:1

C12:0

C12:1n1

C12:1n7

C14:2

C15:0

C16:1n9

C16:2

C17:0

C17:1

C18:1n9t

9c,11t-CLA

C18:4n3

C19:0

C20:3n3

C20:3n9

C20:4n3

C21:0

C22:2n6

C23:0

C26:0

C26:1

PhA

PtA

5.76 0.36 6.24% 7.02 0.29 4.19% 19.80 0.97 4.90% 34.1 13.3 30.1

11.5 0.5 4.13% 13.4 0.8 5.91% 37.2 1.2 3.15% 21.8 27.2 18.0

18.2 0.8 4.43% 20.5 1.1 5.20% 36.4 1.3 3.67% 22.7 26.8 19.4

8.65

0.65

1.20

1.27

0.28

0.14

0.10

0.23

3.27%

21.87%

8.12%

18.41%

11.59

2.25

1.30

1.79

0.55

0.17

0.02

0.15

4.78%

7.36%

1.40%

8.52%

24.92

3.10

2.39

2.79

1.02

0.24

0.06

0.30

4.09%

7.71%

2.32%

10.69%

7.95

11.1

2.30

1.62

14.08

5.34

1.67

1.73

9.73

3.22

1.74

1.20

1.81

0.75

0.21

0.02

11.76%

2.17%

6.19

3.76

0.42

0.17

6.77%

4.55%

7.36

2.13

0.10

0.05

1.33%

2.56%

6.71

9.27

8.08

2.11

3.07

1.76

density (g/mL) 1.03 1.03 1.03 1.0 1.03 1.03

Table 3 Table 5 Table 7 Table 9 Table 11 Table 13

Unknown 1 Unknown 2 Unknown 3 SRM 2378

Code mean stdev rsd mean stdev rsd mean stdev rsd 2378-1 2378-2 2378-3

C14:0 47.4 1.5 3.12% 68.7 2.0 2.97% 174.4 7.3 4.20% 186 128 130

C14:1n5 2.29 0.32 13.98% 5.24 0.19 3.53% 11.73 0.47 3.98% 11.7 8.5 9.6

C16:0 1,958 75 3.83% 1,930 23 1.21% 3,124 130 4.15% 2947 2723 2171

C16:1n7 117 4 3.56% 175 6 3.37% 163 7 4.09% 210 252 159

C18:0 629 26 4.12% 601 14 2.35% 993 37 3.71% 782 803 645

C18:1n7 111 7 6.25% 104 1 1.38% 111 5 4.73% 132 129 97

C18:1n9 1,636 60 3.65% 1,569 24 1.51% 2,327 86 3.70% 2186 2722 1824

C18:2n6 2,824 112 3.96% 2,599 33 1.28% 3,364 133 3.95% 3298 3955 2816

C18:3n3 33.8 1.2 3.63% 48.6 2.1 4.32% 59.5 2.1 3.56% 97.9 96.8 47.6

C18:3n6 20.9 1.0 4.58% 37.0 1.5 3.94% 66.5 2.3 3.49% 42.3 77.3 46.8

C20:0 2.04 0.08 4.12% 2.36 0.09 4.02% 3.83 0.09 2.24% 6.73 3.93 5.32

C20:1n9 10.1 1.2 11.78% 6.7 0.9 12.94% 8.6 0.3 4.04% 13.2 10.7 11.2

C20:2n6 20.5 1.4 6.95% 19.2 1.3 6.73% 23.3 1.1 4.92% 16.4 19.4 14.1

C20:3n6 99.7 3.0 2.99% 126.0 2.3 1.80% 196.2 9.7 4.92% 99.0 175 94.4

C20:4n6 727 34 4.71% 538 15 2.74% 869 29 3.30% 761 961 807

C20:5n3 21.4 0.8 3.82% 116.6 4.3 3.70% 63.6 2.3 3.56% 283 63.8 51.5

C22:0 0.87 0.10 11.25% 0.87 0.09 9.85% 1.45 0.11 7.93% 3.11 1.87 3.81

C22:1n9 NA NA NA NA NA NA

C22:4n6 15.2 1.0 6.35% 13.3 0.7 5.40% 18.7 1.2 6.62% 12.7 18.8 15.6

C22:5n3 22.0 0.8 3.56% 51.3 2.3 4.47% 39.0 0.3 0.71% 51.3 41.2 25.0

C22:5n6 11.9 0.6 4.98% 8.3 0.7 8.38% 20.0 0.8 3.81% 8.44 14.5 13.2

C22:6n3 122 6 4.94% 192 8 4.26% 253 8 3.15% 315 151 143

C24:0 0.75 0.15 20.06% 0.75 0.17 22.13% 1.61 0.02 1.37% 2.68 1.91 2.92

C24:1n9 <LOD <LOD <LOD <LOD <LOD <LOD
163